{"product_id":"fish-doxy","title":"Fish Doxy (Fix Doxy) Doxycycline 100mg Fish Antibacterial","description":"\u003cstyle\u003e\n  .fph-product-copy {\n    --fph-text: #1f2937;\n    --fph-heading: #111827;\n    --fph-border: #d9dde6;\n    --fph-surface: #f8fafc;\n    --fph-surface-alt: #f3f5f8;\n    --fph-accent: #143583;\n    --fph-danger: #c62828;\n    --fph-warning: #f59e0b;\n    --fph-radius: 18px;\n    color: var(--fph-text);\n    font-size: clamp(15px, 1.05vw, 17px);\n    line-height: 1.75;\n    overflow-wrap: break-word;\n  }\n\n  .fph-product-copy,\n  .fph-product-copy * {\n    box-sizing: border-box;\n  }\n\n  .fph-product-copy .fph-section \u003e * + *,\n  .fph-product-copy .fph-acc-body \u003e * + *,\n  .fph-product-copy .fph-more-body \u003e * + * {\n    margin-top: clamp(14px, 2vw, 20px);\n  }\n\n  .fph-product-copy h2 {\n    margin: 0;\n    color: var(--fph-heading);\n    font-size: clamp(23px, 2.6vw, 33px);\n    line-height: 1.24;\n    letter-spacing: -0.02em;\n  }\n\n  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background: var(--fph-accent);\n    color: #ffffff;\n    font-size: 15px;\n    font-weight: 700;\n    line-height: 1;\n  }\n\n  \/* --- FAQ Accordion --- *\/\n  .fph-product-copy .fph-faq-list {\n    display: grid;\n    gap: clamp(10px, 1.6vw, 14px);\n    padding: 0;\n    list-style: none;\n  }\n\n  .fph-product-copy .fph-faq-item {\n    min-width: 0;\n    border: 1px solid var(--fph-border);\n    border-radius: var(--fph-radius);\n    background: var(--fph-surface);\n    overflow: hidden;\n  }\n\n  .fph-product-copy .fph-faq-item[open] {\n    background: #ffffff;\n    border-color: var(--fph-accent);\n  }\n\n  .fph-product-copy .fph-faq-item summary {\n    display: flex;\n    align-items: center;\n    justify-content: space-between;\n    gap: 12px;\n    min-width: 0;\n    min-height: 44px;\n    padding: clamp(14px, 2vw, 18px) clamp(16px, 2vw, 22px);\n    font-weight: 600;\n    color: var(--fph-heading);\n    cursor: pointer;\n    list-style: none;\n  }\n\n  .fph-product-copy 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clamp(16px, 2.4vw, 22px);\n  }\n\n  \/* --- Inline Warning --- *\/\n  .fph-product-copy .fph-inline-warning {\n    color: var(--fph-danger);\n    font-weight: 700;\n  }\n\n  \/* --- Section scroll offset (kept: section ids stay linkable) --- *\/\n  .fph-product-copy [id] {\n    scroll-margin-top: 80px;\n  }\n\n  \/* --- Responsive --- *\/\n  @media (max-width: 989px) {\n    .fph-product-copy .fph-card-list,\n    .fph-product-copy .fph-info-grid {\n      grid-template-columns: 1fr;\n    }\n  }\n\n  @media (max-width: 767px) {\n    .fph-product-copy {\n      font-size: 15px;\n      line-height: 1.68;\n    }\n\n    .fph-product-copy h2 {\n      font-size: clamp(22px, 7vw, 28px);\n    }\n\n    .fph-product-copy .fph-step-list li {\n      padding: 64px 16px 16px;\n    }\n\n    .fph-product-copy .fph-step-list li::before {\n      top: 16px;\n      left: 16px;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"fph-product-copy\"\u003e\n\u003csection class=\"fph-section\" id=\"fph-intro\"\u003e\n\u003ch2\u003eFish Doxycycline 100mg: Doxycycline for Fish and Pet Birds with Fin Rot,\u003cbr\u003eColumnaris, Septicemia and Respiratory Infections\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFish Doxy (Fix Doxy)\u003c\/strong\u003e is fish doxycycline supplied in 100mg tablets for ornamental aquarium fish and non-food pet birds. Aquarists use it for bacterial infections such as fin and tail rot, columnaris, and septicemia in freshwater and saltwater tanks, at one 100 mg tablet per 15 gallons of water, every 24 hours for 5 to 10 days. It is also chosen for racing pigeons and other pet birds during respiratory infections, mycoplasmosis (mycoplasma), or suspected chlamydiosis (also known as parrot fever, psittacosis, or ornithosis).\u003c\/p\u003e\n\u003cp\u003eIf you used to buy the discontinued Thomas Labs Fish Doxy, Aqua Doxy, or older Bird Biotic, Fix Doxy is the online replacement. It supplies the same doxycycline strength in bottles of 30 or 60 tablets with fresh expiration dates, and it is a straightforward option when you need doxycycline for birds or a fish doxycycline product to buy online. Hobbyists also shorten the name to fish dox or bird doxy.\u003c\/p\u003e\n\u003cp\u003eUse Fix Doxy when you notice early signs of bacterial stress in your fish or pet birds. Common symptoms differ between species, so check the lists below to identify what to watch for.\u003c\/p\u003e\n\u003cp class=\"fph-alert\"\u003e\u003cstrong\u003eImportant Notice:\u003c\/strong\u003e This product is intended for aquarium and ornamental fish and pet birds only. It is not for animals used for food.\u003c\/p\u003e\n\u003cdetails class=\"fph-more\"\u003e\n\u003csummary\u003e\u003cspan class=\"fph-more-open\"\u003eSee More +\u003c\/span\u003e\u003cspan class=\"fph-more-close\"\u003eSee Less −\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"fph-more-body\"\u003e\n\u003cdiv class=\"fph-info-grid\"\u003e\n\u003cdiv class=\"fph-info-card\"\u003e\n\u003ch3\u003eFish-Specific Symptoms\u003c\/h3\u003e\n\u003cul class=\"fph-symptom-list\"\u003e\n\u003cli\u003eClamped or frayed fins (fin and tail rot)\u003c\/li\u003e\n\u003cli\u003eSlime disease, mouth fungus \/ mouth rot\u003c\/li\u003e\n\u003cli\u003eColumnaris (cotton wool disease)\u003c\/li\u003e\n\u003cli\u003eRed or cloudy patches on the body\u003c\/li\u003e\n\u003cli\u003eBacterial hemorrhagic septicemia\u003c\/li\u003e\n\u003cli\u003eGill disease, labored gill movement\u003c\/li\u003e\n\u003cli\u003eLoss of appetite, hiding behavior\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-info-card\"\u003e\n\u003ch3\u003eBird-Specific Symptoms\u003c\/h3\u003e\n\u003cul class=\"fph-symptom-list\"\u003e\n\u003cli\u003eRespiratory infections (sneezing, wheezing, nasal discharge)\u003c\/li\u003e\n\u003cli\u003eMycoplasmosis (mycoplasma)\u003c\/li\u003e\n\u003cli\u003eChlamydiosis \/ ornithosis \/ psittacosis (parrot fever)\u003c\/li\u003e\n\u003cli\u003ePasteurellosis (common in pigeons)\u003c\/li\u003e\n\u003cli\u003eFluffed-up feathers, lethargy, inactivity\u003c\/li\u003e\n\u003cli\u003eEye infections, persistent loss of appetite\u003c\/li\u003e\n\u003cli\u003eChanges in droppings or vocalization\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eAddressing potential bacterial issues early with doxycycline, together with good water quality and advice from an aquatic or avian professional when available, helps your fish and birds maintain a stable, healthy aquarium or aviary.\u003c\/p\u003e\n\u003cp class=\"fph-tip\"\u003e\u003cstrong\u003eOrder online and ship directly from our U.S. warehouse.\u003c\/strong\u003e Fix Doxy doxycycline 100 mg tablets are available to buy online with same-day dispatch on orders placed before 1:30 p.m. CT, Monday through Friday.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003cdetails class=\"fph-acc\" id=\"fph-comparison\"\u003e\n\u003csummary\u003e\n\u003ch2\u003eFish Doxy vs Fix Doxy: What Changed?\u003c\/h2\u003e\n\u003c\/summary\u003e\n\u003cdiv class=\"fph-acc-body\"\u003e\n\u003cp\u003eIf you used to buy Fish Doxy, Aqua Doxy, or Bird Biotic from Thomas Labs, here is what stayed the same and what is different with Fix Doxy from Aqua Soma Labs.\u003c\/p\u003e\n\u003cdiv class=\"fph-info-grid\"\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eSame Doxycycline\u003c\/strong\u003e\u003cbr\u003eFix Doxy delivers the same \u003cstrong\u003edoxycycline hyclate 100 mg\u003c\/strong\u003e per tablet that was used in the original Fish Doxy and Bird Biotic products.\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eNew Manufacturer\u003c\/strong\u003e\u003cbr\u003eFix Doxy is made by \u003cstrong\u003eAqua Soma Labs\u003c\/strong\u003e, replacing Thomas Labs, which discontinued its Fish Doxy and Bird Biotic lines.\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eSame Tablet Form\u003c\/strong\u003e\u003cbr\u003e100 mg tablets with the same dosing style (1 tablet per 15 gallons), so switching from Fish Doxy to Fix Doxy requires no changes to your routine.\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eUpdated Packaging \u0026amp; Labeling\u003c\/strong\u003e\u003cbr\u003eNew bottle design and labeling under the Fix brand, with the same doxycycline formula and fresh expiration dates.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-acc\" id=\"fph-benefits\"\u003e\n\u003csummary\u003e\n\u003ch2\u003eBenefits of Fix Doxy for Fish \u0026amp; Birds\u003c\/h2\u003e\n\u003c\/summary\u003e\n\u003cdiv class=\"fph-acc-body\"\u003e\n\u003cul class=\"fph-card-list\"\u003e\n\u003cli\u003e\n\u003ch3\u003eTargets Common Bacterial Problems\u003c\/h3\u003e\n\u003cp\u003eHelps manage common bacterial problems such as fin and tail rot, columnaris, gill disease, septicemia, internal bacterial infections, and avian respiratory infections caused by certain Gram-positive and Gram-negative bacteria in both freshwater and saltwater aquariums.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eMade in the United States\u003c\/h3\u003e\n\u003cp\u003eFix Doxy is manufactured by Aqua Soma Labs and ships from a U.S. warehouse with fresh expiration dates, so you receive a recently made product ready for your tank or aviary.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eOne Solution for Fish \u0026amp; Birds\u003c\/h3\u003e\n\u003cp\u003eFix Doxy is formulated for both ornamental aquarium fish and non-food pet birds, so one doxycycline product covers tanks and aviaries. Use it for individual treatment or a whole flock as appropriate.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eFixed 100 mg Tablets\u003c\/h3\u003e\n\u003cp\u003eEach tablet delivers a fixed \u003cstrong\u003e100 mg doxycycline\u003c\/strong\u003e amount. These fish doxycycline tablets make it easier to follow the charts and repeat treatments accurately across different tank volumes or bird sizes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eFlexible Use in Tanks \u0026amp; Feed\u003c\/h3\u003e\n\u003cp\u003eTablets are water-soluble and easy to crush, so you can dissolve them in a hospital or quarantine tank, or mix them with food or drinking water as directed. This helps when you need to treat sensitive fish or birds.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eAvailable in 30-Count and 60-Count Bottles\u003c\/h3\u003e\n\u003cp\u003eChoose a 30-count bottle for a single treatment or a 60-count bottle for larger tanks, multiple birds, or repeat treatments, so you always have doxycycline on hand when needed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eDirect Fish Doxy \u0026amp; Bird Biotic Replacement\u003c\/h3\u003e\n\u003cp\u003eFix Doxy replaces the discontinued Fish Doxy (Thomas Labs), Aqua Doxy, and Bird Biotic products. It delivers the same doxycycline hyclate 100 mg per tablet that hobbyists and breeders used before those lines were discontinued.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-acc\" id=\"fph-dosage\"\u003e\n\u003csummary\u003e\n\u003ch2\u003eUsage Guidelines \u0026amp; Instructions\u003c\/h2\u003e\n\u003c\/summary\u003e\n\u003cdiv class=\"fph-acc-body\"\u003e\n\u003cp\u003e\u003cstrong\u003eDirections for Use:\u003c\/strong\u003e\u003c\/p\u003e\n\u003col class=\"fph-step-list\"\u003e\n\u003cli\u003e\n\u003ch3\u003ePrepare a Separate Treatment Area\u003c\/h3\u003e\n\u003cp\u003eFor fish, set up a hospital or quarantine tank with clean, dechlorinated water so you can treat without disturbing the main display tank or its biofilter. Any aquarium doxycycline treatment works best in a separate tank, so remove activated carbon, resins and UV sterilizers during dosing, as they can strip doxycycline from the water.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eCalculate and Give the Dose\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eFish:\u003c\/strong\u003e Check the dosing instructions on your Fix Doxy bottle. Label directions for 100 mg tablets typically call for \u003cstrong\u003e1 tablet (100 mg) per 15 gallons (57 L) of water\u003c\/strong\u003e, repeated every 24 hours for several days. Pre-dissolve the tablet in a small cup of tank water, then add it evenly around the treatment tank.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBirds:\u003c\/strong\u003e For companion birds, the amount is based on the bird's weight or the volume of treated drinking water. Crush the tablet and mix with soft food or a measured amount of drinking water \u003cstrong\u003eonly as directed\u003c\/strong\u003e on the packaging or by an avian veterinarian, making sure the bird receives the full intended amount.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eMonitor Progress and Water Quality\u003c\/h3\u003e\n\u003cp\u003eWatch appetite, breathing, activity level and fin or feather condition every day. If symptoms worsen or no improvement is seen after several days, contact a veterinarian. For fish, perform partial water changes between doses if water quality declines, then re-dose for the new water volume. Continue treatment for the full number of days recommended on the label, usually around \u003cstrong\u003e5 to 10 days\u003c\/strong\u003e, unless your vet advises otherwise, and never exceed label directions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ctable class=\"fph-dose-table\"\u003e\n\u003ccaption\u003eFix Doxy Amounts by Aquarium Size\u003c\/caption\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003eTank volume\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e100 mg tablets per use\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e15 gallons (57 L)\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e30 gallons (114 L)\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45 gallons (170 L)\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e60 gallons (227 L)\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e75 gallons (284 L)\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThese figures follow the label directions of one dissolved tablet per 15 gallons of water. Dose by the water volume of your treatment tank, not by the number of fish, give one dose every 24 hours with a partial water change between doses, and round to the nearest practical tablet. The bottle label or your aquatic veterinarian takes priority over this quick-reference chart.\u003c\/p\u003e\n\u003ch3\u003eWhat to Expect During Treatment\u003c\/h3\u003e\n\u003cdiv class=\"fph-info-grid\"\u003e\n\u003cdiv class=\"fph-info-card\"\u003e\n\u003ch3\u003eDays 1 to 2\u003c\/h3\u003e\n\u003cp\u003eFish may hide or eat less, and the water can look slightly discolored. This is normal early on. Keep dosing on schedule and keep aeration strong.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-info-card\"\u003e\n\u003ch3\u003eDays 3 to 5\u003c\/h3\u003e\n\u003cp\u003eLook for signs it is working: sores and red patches stop spreading, appetite starts to return, and breathing steadies. The label says to discontinue use if no improvement is seen after 5 days, so if there is no change by day 5, or the fish look worse, stop and ask an aquatic veterinarian.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-info-card\"\u003e\n\u003ch3\u003eDays 5 to 10\u003c\/h3\u003e\n\u003cp\u003eEven if the fish are improving, finish the full number of days so the infection does not return. Afterward, run a partial water change and put activated carbon back in to clear any leftover doxycycline.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-info-card\"\u003e\n\u003ch3\u003eWhat You Need for Treatment\u003c\/h3\u003e\n\u003cp\u003eA little setup before the first dose saves trouble later.\u003c\/p\u003e\n\u003cul class=\"fph-symptom-list\"\u003e\n\u003cli\u003eA separate hospital or quarantine tank, so you are not treating the whole display.\u003c\/li\u003e\n\u003cli\u003eA heater and an air stone or sponge filter for steady temperature and strong aeration.\u003c\/li\u003e\n\u003cli\u003eAn ammonia and nitrite test kit to keep tabs on water quality.\u003c\/li\u003e\n\u003cli\u003eA dechlorinator for the water changes between doses.\u003c\/li\u003e\n\u003cli\u003eA small net and a clean cup for gentle transfer and for dissolving each tablet.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp class=\"fph-tip\"\u003e\u003cstrong\u003ePro Tip:\u003c\/strong\u003e Keep a few extra Fix Doxy tablets on hand so you always have them ready at the first sign of bacterial stress. A quarantine tank with a heater and sponge filter makes treatment faster and protects your main system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-acc\" id=\"fph-mechanism\"\u003e\n\u003csummary\u003e\n\u003ch2\u003eHow Fix Doxy Works\u003c\/h2\u003e\n\u003c\/summary\u003e\n\u003cdiv class=\"fph-acc-body\"\u003e\n\u003cp\u003eFix Doxy uses doxycycline hyclate 100 mg per tablet to help control certain Gram-positive and Gram-negative bacteria linked with fin and tail rot, mouth rot, columnaris, gill disease, septicemia, and avian respiratory infections. The tablets dissolve readily in aquarium water, and they can also be crushed and mixed with soft food or drinking water, which spreads the dose evenly through a treatment tank or across a flock.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-acc fph-acc--warn\" id=\"fph-safety\"\u003e\n\u003csummary\u003e\n\u003ch2\u003eSafety and Tank Notes\u003c\/h2\u003e\n\u003c\/summary\u003e\n\u003cdiv class=\"fph-acc-body\"\u003e\n\u003cp\u003e\u003cstrong\u003eWhen used as directed, Fix Doxy usually causes no problems in ornamental fish and pet birds.\u003c\/strong\u003e As with any doxycycline product, incorrect amounts or prolonged use can increase the risk of side effects.\u003c\/p\u003e\n\u003cul class=\"fph-card-list\"\u003e\n\u003cli\u003e\n\u003ch3\u003eFish\u003c\/h3\u003e\n\u003cp\u003eDoxycycline based fish treatments may cause temporary stress or hiding behavior, mild water discoloration and reduced appetite during treatment. If fish show severe distress such as rapid gill movement, loss of balance or gasping at the surface, stop treatment and seek aquatic veterinary advice.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eBirds\u003c\/h3\u003e\n\u003cp\u003eWhen doxycycline is given in food or drinking water, potential reactions can include decreased appetite, lethargy or changes in droppings if the amount is too high or the bird is sensitive. If your bird appears fluffed up, inactive or stops eating, discontinue use and contact an avian veterinarian.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eInvertebrates\u003c\/h3\u003e\n\u003cp\u003eDo not use Fix Doxy in tanks that contain shrimp, snails, or other invertebrates, as strong treatments may harm them. Treat fish in a separate hospital tank whenever possible.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eSafe Use in Your System\u003c\/h3\u003e\n\u003cp\u003eWhenever possible, treat fish in a hospital or quarantine tank, remove activated carbon and UV sterilizers and follow label directions for dose and duration. Do not mix Fix Doxy with other treatments unless advised by a veterinarian.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eImportant Safety Warning\u003c\/h3\u003e\n\u003cp\u003eFix Doxy is intended for \u003cstrong\u003eornamental aquarium fish and non-food pet birds only\u003c\/strong\u003e. It is \u003cstrong\u003enot for animals raised for food\u003c\/strong\u003e. Store the product in a cool, dry place away from children and pets. Always follow label directions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-acc\" id=\"fph-shipping\"\u003e\n\u003csummary\u003e\n\u003ch2\u003eShipping \u0026amp; Returns\u003c\/h2\u003e\n\u003c\/summary\u003e\n\u003cdiv class=\"fph-acc-body\"\u003e\n\u003cdiv class=\"fph-info-grid\"\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eShipping Policy:\u003c\/strong\u003e Orders ship from our U.S. warehouse within 1 business day via USPS or UPS, with rates and delivery times calculated at checkout. For full shipping details, please review our \u003ca href=\"https:\/\/finepethealth.com\/policies\/shipping-policy\"\u003eshipping policy\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eRefund Policy:\u003c\/strong\u003e If there is an issue with your order, you may be able to return or exchange items within 30 days according to our store guidelines. Before sending anything back, please review our \u003ca href=\"https:\/\/finepethealth.com\/policies\/refund-policy\"\u003erefund policy\u003c\/a\u003e carefully.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-acc\"\u003e\n\u003csummary\u003e\n\u003ch2\u003eMore Fish \u0026amp; Bird Treatments\u003c\/h2\u003e\n\u003c\/summary\u003e\n\u003cdiv class=\"fph-acc-body\"\u003e\n\u003cdiv class=\"fph-info-grid\"\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eFix Zole (Metronidazole) 250\/500mg\u003c\/strong\u003e A treatment for Hexamita, hole-in-the-head disease, and other protozoa-related problems in ornamental fish. Available in 60-count bottles. \u003ca href=\"https:\/\/finepethealth.com\/products\/fish-zole\"\u003eShop Fix Zole\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eFix Mox (Amoxicillin) 250\/500mg\u003c\/strong\u003e A treatment for fin rot, dropsy, ulcers and other bacterial infections in ornamental fish. Available in 30-count and 100-count capsules. \u003ca href=\"https:\/\/finepethealth.com\/products\/fish-mox\"\u003eShop Fix Mox\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eFix Zithro (Azithromycin) 250mg\u003c\/strong\u003e A treatment for fin rot, columnaris, gill disease, and avian respiratory concerns in fish and non-food pet birds. Available in 12-count and 30-count tablets. \u003ca href=\"https:\/\/finepethealth.com\/products\/fish-zithro\"\u003eShop Fix Zithro\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eFix Cin (Clindamycin) 150mg\u003c\/strong\u003e A treatment for gram-positive bacterial problems, including skin and soft-tissue concerns, in ornamental fish. \u003ca href=\"https:\/\/finepethealth.com\/products\/fish-cin\"\u003eShop Fix Cin\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eFix Sulfa (SMZ\/TMP) 960mg\u003c\/strong\u003e A treatment used against a range of bacterial infections in ornamental fish. \u003ca href=\"https:\/\/finepethealth.com\/products\/fish-sulfa\"\u003eShop Fix Sulfa\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eFix Pen (Penicillin) 500mg\u003c\/strong\u003e A treatment for gram-positive bacterial problems in ornamental fish and non-food pet birds. \u003ca href=\"https:\/\/finepethealth.com\/products\/fish-pen\"\u003eShop Fix Pen\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eFix Flex (Cephalexin) 250\/500mg\u003c\/strong\u003e A treatment for fin rot, ulcers, and bacterial skin infections in ornamental fish and non-food pet birds. \u003ca href=\"https:\/\/finepethealth.com\/products\/fish-flex\"\u003eShop Fix Flex\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eFix Flox (Ciprofloxacin) 500mg\u003c\/strong\u003e A treatment for gram-negative bacterial problems, including fin rot, ulcers, columnaris, and septicemia, in ornamental fish and non-food pet birds. \u003ca href=\"https:\/\/finepethealth.com\/products\/fish-flox\"\u003eShop Fix Flox\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eBrowse all treatments\u003c\/strong\u003e Explore our complete \u003ca rel=\"noopener\" href=\"https:\/\/finepethealth.com\/collections\/fish-bird-antibacterials\"\u003e\u003cstrong\u003eFish \u0026amp; Bird Antibacterials Collection\u003c\/strong\u003e\u003c\/a\u003e for more Fix line products and related treatments.\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eGuides and treatment tips\u003c\/strong\u003e Visit the \u003ca rel=\"noopener\" href=\"https:\/\/finepethealth.com\/blogs\/fish-and-bird-antibacterials\"\u003e\u003cstrong\u003eFish \u0026amp; Bird Treatments Blog\u003c\/strong\u003e\u003c\/a\u003e for practical usage guides, water-care advice and treatment tips.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e\n\u003csection class=\"fph-section\" id=\"fph-faq\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"fph-faq-list\"\u003e\n\u003cdetails class=\"fph-faq-item\"\u003e\n\u003csummary\u003eWhat is fish doxy?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFish doxy is a common name for doxycycline sold as an aquarium and aviary treatment. Fix Doxy is the current version: doxycycline hyclate 100 mg tablets for ornamental fish and non-food pet birds. It is used for bacterial problems like fin and tail rot, columnaris, gill disease, and septicemia, not fungi, viruses, or parasites such as ich and flukes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-faq-item\"\u003e\n\u003csummary\u003eWhat is Fix Doxy used for?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFix Doxy is a doxycycline hyclate 100 mg antibacterial treatment for ornamental aquarium fish and non-food pet birds. It is used when bacterial problems such as fin and tail rot, columnaris, gill disease, septicemia or respiratory infections in birds are suspected and a veterinarian or experienced aquatic or avian keeper recommends a doxycycline product. It does not treat parasitic, viral or fungal conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-faq-item\"\u003e\n\u003csummary\u003eWhat is the difference between Fish Doxy and Fix Doxy?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFish Doxy was a doxycycline 100 mg product made by Thomas Labs, which has been discontinued. Fix Doxy is a replacement made by Aqua Soma Labs using the same doxycycline hyclate 100 mg and the same tablet-based dosing style. The main difference is the manufacturer and packaging; the doxycycline, strength and general usage directions are the same.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-faq-item\"\u003e\n\u003csummary\u003eIs Fix Doxy a replacement for Bird Biotic?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eYes. Bird Biotic was a doxycycline hyclate 100 mg product from Thomas Labs intended for pigeons, pet birds, and exotic birds. Fix Doxy contains the same doxycycline at the same strength and can be used for non-food pet birds in the same way. Follow the Fix Doxy label directions for avian dosing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-faq-item\"\u003e\n\u003csummary\u003eIs Fix Doxy the same as Aqua Doxy?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eAqua Doxy was another doxycycline based fish treatment brand. Fix Doxy from Aqua Soma Labs uses the same doxycycline hyclate 100 mg and serves the same purpose. If you previously used Aqua Doxy for your aquarium or aviary, Fix Doxy is a suitable replacement with the same dosing strength.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-faq-item\"\u003e\n\u003csummary\u003eIs Fix Doxy available in 500 mg?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFix Doxy is only available as \u003cstrong\u003e100 mg tablets\u003c\/strong\u003e. If a higher total dose is needed, use multiple 100 mg tablets according to label directions or veterinary guidance. For example, a 500 mg total dose would require five 100 mg tablets. Always measure tank volume or bird body weight carefully before increasing the amount, and never exceed the dosing schedule printed on the Fix Doxy label.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-faq-item\"\u003e\n\u003csummary\u003eWhat is the fish doxycycline 100mg dosage?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eThe fish doxycycline 100mg dosage guide is one 100 mg tablet per 15 gallons (57 L) of tank water, dosed every 24 hours for 5 to 10 days, with a partial water change between doses. A 30-gallon hospital tank takes 2 tablets. Discontinue use if there is no improvement after 5 days, and follow the bottle label or your aquatic veterinarian.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-faq-item\"\u003e\n\u003csummary\u003eCan Fix Doxy be used for pigeons and other pet birds?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eDoxycycline has a long history of use in avian care, including for \u003cstrong\u003eracing pigeons, parrots, finches, canaries, and other companion birds\u003c\/strong\u003e. Fix Doxy delivers the same doxycycline hyclate 100 mg that was available in Bird Biotic products used by pigeon fanciers and bird breeders. The amount and duration must match the bird's species, size, and condition, so follow the Fix Doxy label directions for non-food pet birds or consult an avian veterinarian before treating. Fix Doxy should not be used for chickens, ducks, or other food-producing birds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-faq-item\"\u003e\n\u003csummary\u003eWhere can I buy doxycycline for fish? Do Walmart or Tractor Supply sell it?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eYou can order Fix Doxy, the current fish doxycycline, directly from Fine Pet Health in 30-count and 60-count bottles. General retailers such as Walmart, Tractor Supply, PetSmart, and Petco do not carry the Aqua Soma Labs line, so a dedicated online supplier is the reliable route. Orders ship from our U.S. warehouse with same-day dispatch on orders placed before 1:30 p.m. CT, Monday through Friday.\u003c\/p\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/finepethealth.com\/collections\/fish-bird-antibacterials\" class=\"fph-faq-link\"\u003eBrowse Fish \u0026amp; Bird Treatments Collection →\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-faq-item\"\u003e\n\u003csummary\u003eCan fish doxy be used for dogs, cats, or chickens?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003e\u003cspan class=\"fph-inline-warning\"\u003eNo.\u003c\/span\u003e Fix Doxy is labeled and intended for \u003cstrong\u003eornamental aquarium fish and non-food pet birds only\u003c\/strong\u003e. It is not appropriate for dogs, cats, or food-producing animals (including chickens, ducks, turkeys, or other poultry). For dogs and cats, doxycycline should be handled by a veterinarian who can recommend the correct amount and a suitable formulation for the species. Food-producing animals are subject to separate rules and must be treated under veterinary oversight so that withdrawal periods are observed. If your dog, cat, or food-producing animal needs antibacterial treatment, please consult a licensed veterinarian.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003c\/div\u003e","brand":"Aqua Soma Labs","offers":[{"title":"100-mg (30 count)","offer_id":50744370397423,"sku":"190064","price":44.99,"currency_code":"USD","in_stock":true},{"title":"100-mg (60 count)","offer_id":50744370430191,"sku":"748714","price":69.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0838\/2296\/9071\/files\/fish-doxy-doxycycline-100mg-30-count-fish-antibacterial..webp?v=1789229493","url":"https:\/\/myfishmox.com\/products\/fish-doxy","provider":"My Fish Mox","version":"1.0","type":"link"}