{"title":"Fish Pen","description":"\u003cdiv class=\"collection-description fish-pen-collection\"\u003e\n\n  \u003ch2\u003eFish Pen Penicillin for Ornamental Aquarium Fish\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The \u003cstrong\u003eFish Pen\u003c\/strong\u003e collection features penicillin-based fish antibiotic products labeled for\n    \u003cstrong\u003eornamental aquarium fish use\u003c\/strong\u003e. Fish Pen is a recognized search term among aquarium hobbyists looking for\n    \u003cstrong\u003efish penicillin\u003c\/strong\u003e, \u003cstrong\u003epenicillin for fish\u003c\/strong\u003e, and aquarium-use antibiotic tablets for\n    responsible fishkeeping, quarantine tank preparation, and organized aquarium care.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    This collection helps fish keepers compare Fish Pen products by active ingredient, labeled strength, tablet count, brand,\n    and aquarium-use directions. Whether you maintain freshwater aquariums, saltwater aquariums, ornamental pond systems,\n    quarantine tanks, or hospital tanks, Fish Pen products can be organized as part of a prepared aquarium care setup when\n    used responsibly and according to the product label.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eWhat Is Fish Pen?\u003c\/h3\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eFish Pen\u003c\/strong\u003e is commonly associated with \u003cstrong\u003epenicillin fish antibiotics\u003c\/strong\u003e. Penicillin is a\n    well-known antibiotic ingredient, and in aquarium product form it is marketed for ornamental fish use only. Fish Pen\n    products may appear in different labeled strengths and bottle counts depending on the product, supplier, and brand.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Aquarium owners often search for Fish Pen when they want a clearly labeled penicillin-based product to organize alongside\n    essential aquarium supplies such as water conditioners, water test kits, filtration media, quarantine tank equipment,\n    aeration tools, and general fish care products. A well-organized aquarium care cabinet makes it easier to identify active\n    ingredients, compare strengths, and review product labels before making aquarium care decisions.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eWhy Aquarium Owners Choose Fish Pen\u003c\/h3\u003e\n\n  \u003cp\u003e\n    Fish Pen remains an important collection keyword because many fish keepers recognize the name and associate it with\n    \u003cstrong\u003efish penicillin tablets\u003c\/strong\u003e. Aquarium hobbyists often compare this category with other fish antibiotic\n    collections when building a responsible aquarium preparedness kit or organizing products by active ingredient.\n  \u003c\/p\u003e\n\n  \u003cul\u003e\n    \u003cli\u003ePenicillin-based fish antibiotic products for ornamental aquarium use\u003c\/li\u003e\n    \u003cli\u003eCommonly searched as Fish Pen, Fish Penicillin, and penicillin for fish\u003c\/li\u003e\n    \u003cli\u003eUseful for aquarium supply organization and quarantine-tank preparedness\u003c\/li\u003e\n    \u003cli\u003eAvailable in labeled strengths and counts depending on the product\u003c\/li\u003e\n    \u003cli\u003eIntended for ornamental fish only, not for human or food-fish use\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eFish Pen for Responsible Aquarium Preparedness\u003c\/h3\u003e\n\n  \u003cp\u003e\n    Responsible aquarium care begins with prevention. Stable water quality, proper filtration, correct stocking levels,\n    consistent maintenance, quarantine procedures, and careful observation are essential parts of fishkeeping. Fish Pen\n    products should be viewed as one part of a broader ornamental fish care plan, not as a replacement for good aquarium\n    management or qualified aquatic guidance.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Before using any aquarium antibiotic product, fish keepers should evaluate the full aquarium environment. Important water\n    parameters include ammonia, nitrite, nitrate, pH, temperature, salinity when applicable, oxygenation, and overall tank\n    stability. Many visible fish health concerns are connected to environmental stress, poor water quality, overcrowding,\n    shipping stress, diet changes, weakened fish condition, or sudden changes inside the aquarium system.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eHow to Compare Fish Pen Products\u003c\/h3\u003e\n\n  \u003cp\u003e\n    When browsing this Fish Pen collection, compare each product carefully. Product names can look similar, so customers\n    should confirm whether the item contains penicillin, review the labeled strength, check the tablet or capsule count,\n    and read the aquarium-use directions before purchasing or using the product.\n  \u003c\/p\u003e\n\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eActive ingredient:\u003c\/strong\u003e Confirm penicillin on the product label.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStrength:\u003c\/strong\u003e Review the listed mg strength and product format.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCount:\u003c\/strong\u003e Compare the number of tablets or capsules per bottle.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUse labeling:\u003c\/strong\u003e Make sure the product is labeled for ornamental aquarium fish.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStorage:\u003c\/strong\u003e Keep products sealed, dry, secure, and away from children and pets.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eFish Pen and Quarantine Tank Planning\u003c\/h3\u003e\n\n  \u003cp\u003e\n    A quarantine tank is one of the most useful tools in responsible fishkeeping. It gives aquarium owners a separate space\n    to observe new arrivals, monitor stressed fish, and manage fish care without immediately affecting the main display\n    aquarium. Fish Pen products may be organized as part of a quarantine-tank supply kit along with sponge filters, air\n    pumps, heaters, clean containers, water conditioners, test kits, filtration tools, and observation notes.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Fish keepers should avoid unnecessary product use and should never rely on product names alone. Clear observation,\n    water-quality testing, label review, proper quarantine procedures, and a stable aquarium environment are all important\n    before making fish care decisions.\n  \u003c\/p\u003e\n\n  \u003ch3\u003ePopular Fish Pen Search Terms\u003c\/h3\u003e\n\n  \u003cp\u003e\n    This collection is optimized for relevant aquarium-focused search terms, including \u003cstrong\u003eFish Pen\u003c\/strong\u003e,\n    \u003cstrong\u003eFish Penicillin\u003c\/strong\u003e, \u003cstrong\u003efish penicillin\u003c\/strong\u003e, \u003cstrong\u003epenicillin for fish\u003c\/strong\u003e,\n    \u003cstrong\u003efish antibiotic penicillin\u003c\/strong\u003e, \u003cstrong\u003eornamental fish antibiotics\u003c\/strong\u003e,\n    \u003cstrong\u003eaquarium fish antibiotics\u003c\/strong\u003e, and \u003cstrong\u003efish antibiotic tablets\u003c\/strong\u003e. These keywords help customers\n    find the correct collection while keeping the page focused on ornamental aquarium fish use.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eImportant Use Notice\u003c\/h3\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eFor ornamental aquarium fish use only.\u003c\/strong\u003e Not for human consumption. Not for human use. Not for use in fish\n    intended for human consumption. Always read and follow the product label. Store securely and keep out of reach of\n    children and pets. Consult a qualified aquatic professional when fish health concerns are unclear, severe, or persistent.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n  \u003ch4\u003eWhat is Fish Pen?\u003c\/h4\u003e\n  \u003cp\u003e\n    Fish Pen is commonly used to describe penicillin-based fish antibiotic products labeled for ornamental aquarium fish.\n    Customers should always check the product label to confirm the active ingredient, strength, count, and directions.\n  \u003c\/p\u003e\n\n  \u003ch4\u003eIs Fish Pen the same as fish penicillin?\u003c\/h4\u003e\n  \u003cp\u003e\n    Fish Pen is commonly associated with penicillin as the active ingredient. However, formulas, strengths, and product labels\n    can vary, so always review the product label before comparing or selecting an item.\n  \u003c\/p\u003e\n\n  \u003ch4\u003eWhat strengths are commonly searched for Fish Pen?\u003c\/h4\u003e\n  \u003cp\u003e\n    Common search terms include Fish Pen 250 mg, Fish Pen 500 mg, and fish penicillin tablets. Availability may vary\n    depending on brand, bottle count, and supplier.\n  \u003c\/p\u003e\n\n  \u003ch4\u003eWho is this collection intended for?\u003c\/h4\u003e\n  \u003cp\u003e\n    This collection is intended for aquarium hobbyists and ornamental fish keepers looking for labeled Fish Pen penicillin\n    products for aquarium-use preparedness and responsible fish care.\n  \u003c\/p\u003e\n\n  \u003ch4\u003eCan Fish Pen be used for people or other animals?\u003c\/h4\u003e\n  \u003cp\u003e\n    No. Products in this collection are intended for ornamental aquarium fish use only. They are not for human use, not for\n    human consumption, and not for fish intended for food.\n  \u003c\/p\u003e\n\n  \u003ch4\u003eWhat should aquarium owners check before using any fish antibiotic?\u003c\/h4\u003e\n  \u003cp\u003e\n    Aquarium owners should check the product label, confirm the active ingredient, review aquarium-use directions, and test\n    water quality first. Ammonia, nitrite, nitrate, pH, temperature, oxygenation, and overall tank stability should be\n    evaluated before making fish care decisions.\n  \u003c\/p\u003e\n\n  \u003ch4\u003eShould Fish Pen be stored in an aquarium care kit?\u003c\/h4\u003e\n  \u003cp\u003e\n    Many aquarium keepers organize Fish Pen products in a fish care kit alongside test kits, water conditioners, quarantine\n    tank supplies, filtration tools, and other aquarium essentials. Products should be stored securely, sealed, dry, and away\n    from children and pets.\n  \u003c\/p\u003e\n\n\u003c\/div\u003e","products":[{"product_id":"fish-pen-penicillin-500mg-30-tablets-fish-antibiotics","title":"Fish Pen (Penicillin) 500mg 30 Tablets Fish Antibiotics","description":"\u003ch1\u003eFish Pen Penicillin 500mg – 30 Tablets\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eFish Pen (Penicillin) Tablets\u003c\/strong\u003e are a dependable remedy for bacterial infections in aquarium fish. This broad-spectrum antibiotic targets gram-positive bacteria and is highly effective for conditions like fin rot, columnaris, and gill disease.\u003c\/p\u003e\n\u003cp\u003eFormulated for aquarium use\u003ca href=\"https:\/\/fishantibiotics.us\/collections\/fish-penicillin\"\u003e\u003c\/a\u003e, Fish Pen is easy to dose, dissolves rapidly in water, and is suitable for both freshwater and saltwater systems. Whether you’re treating minor symptoms or a widespread bacterial outbreak, Fish Pen helps restore aquatic health quickly and effectively.\u003c\/p\u003e\n\u003ch2\u003eKey Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Spectrum of Action:\u003c\/strong\u003e Treats a wide range of gram-positive bacterial infections common in fish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon Fish Infections:\u003c\/strong\u003e Effective against fin rot, mouth rot, gill disease, and skin lesions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Application:\u003c\/strong\u003e Can be dissolved directly in tank water or added to food if advised.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe for Most Fish:\u003c\/strong\u003e Relatively nontoxic when used correctly across freshwater and select marine species.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid Recovery:\u003c\/strong\u003e Stops bacterial development, reduces stress, and speeds recovery time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrevents Spread:\u003c\/strong\u003e Helps contain the infection, protecting healthy fish from contamination.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDirections\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAdd one 500mg tablet per 20 gallons of aquarium water.\u003c\/li\u003e\n\u003cli\u003eRepeat the dosage every 24 hours with a partial water change in between.\u003c\/li\u003e\n\u003cli\u003eContinue treatment for 5–10 days depending on infection severity.\u003c\/li\u003e\n\u003cli\u003eIf no improvement after 5 days, stop treatment and consult a fish health expert.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCautions\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFor aquarium use only – not for human consumption.\u003c\/li\u003e\n\u003cli\u003eNot for fish intended for human food use.\u003c\/li\u003e\n\u003cli\u003eRemove invertebrates such as shrimp and snails before dosing.\u003c\/li\u003e\n\u003cli\u003eMonitor water quality closely, as Penicillin may affect beneficial bacteria.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eStorage Instructions\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eStore at 59°–86°F (15°–30°C) in a cool, dry place.\u003c\/li\u003e\n\u003cli\u003eKeep lid tightly sealed to protect tablets from moisture and light.\u003c\/li\u003e\n\u003cli\u003eCheck expiration date for product freshness.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eShipping \u0026amp; Returns\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e We offer a wide range of options including Ground, Express, and International delivery. View shipping policy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReturns:\u003c\/strong\u003e If you need to return or exchange this product, please review our refund policy here.\u003c\/p\u003e\n\u003ch2\u003eFAQs – Fish Pen Penicillin 500mg 30 Tablets\u003c\/h2\u003e\n\u003ch3\u003eWhat does Fish Pen treat?\u003c\/h3\u003e\n\u003cp\u003eFish Pen targets gram-positive bacteria and is effective against infections such as fin rot, gill disease, and columnaris.\u003c\/p\u003e\n\u003ch3\u003eCan it be used in saltwater aquariums?\u003c\/h3\u003e\n\u003cp\u003eYes. Fish Pen is effective in both freshwater and saltwater tanks when dosed correctly.\u003c\/p\u003e\n\u003ch3\u003eWill it affect the biological filter?\u003c\/h3\u003e\n\u003cp\u003eIt can. Monitor water quality carefully and reintroduce beneficial bacteria if needed post-treatment.\u003c\/p\u003e\n\u003ch3\u003eIs Fish Pen safe for invertebrates?\u003c\/h3\u003e\n\u003cp\u003eNo. Remove shrimp, snails, and crabs before starting treatment, as Penicillin may harm them.\u003c\/p\u003e\n\u003ch3\u003eCan Fish Pen be used for bettas and small species?\u003c\/h3\u003e\n\u003cp\u003eYes, as long as proper dosing is calculated based on tank volume. Avoid overdosing small tanks.\u003c\/p\u003e\n\u003ch3\u003eDoes it discolor aquarium water?\u003c\/h3\u003e\n\u003cp\u003eNo. Fish Pen dissolves clearly and does not stain or cloud the water.\u003c\/p\u003e\n\u003ch3\u003eIs it safe for use in planted tanks?\u003c\/h3\u003e\n\u003cp\u003eGenerally, yes. Fish Pen is not known to harm most live plants.\u003c\/p\u003e\n\u003ch3\u003eCan I use expired Fish Pen?\u003c\/h3\u003e\n\u003cp\u003eNo. Always check the packaging and avoid use past the expiration date for safety and effectiveness.\u003c\/p\u003e\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFish Pen Penicillin 500mg – 60 Tablets\u003c\/li\u003e\n\u003cli\u003eFish Mox Amoxicillin 500mg – 100 Capsules\u003c\/li\u003e\n\u003cli\u003eFish Zithro Azithromycin 250mg – 30 Tablets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable style=\"width: 72.2183%; height: 259px;\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 312.6px;\"\u003e\n\u003ctd style=\"width: 49.7738%; height: 312.6px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.7738%; height: 312.6px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Fish Antibiotics","offers":[{"title":"Default Title","offer_id":51911121043739,"sku":"AS-006-AF","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/4353\/0779\/files\/FishPenicillin500mg30Tablets.png?v=1773851024"},{"product_id":"fish-pen-penicillin-500mg-60-tablets-fish-antibiotics","title":"Fish Pen (Penicillin) 500mg 60 Tablets Fish Antibiotics","description":"\u003ch1\u003eFish Pen Penicillin 500mg – 60 Tablets\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eFish Pen (Penicillin) Tablets\u003c\/strong\u003e are a dependable broad-spectrum antibiotic designed for aquarium fish. Fish Pen targets gram-positive bacterial infections such as fin rot, gill disease, mouth rot, and skin lesions, delivering fast-acting relief and improved aquatic health.\u003c\/p\u003e\n\u003cp\u003ePerfect for both beginner and experienced aquarists, Fish Pen is safe for use in freshwater and saltwater aquariums and dissolves quickly for even treatment distribution. Restore your fish’s health and prevent the spread of infections with this essential fish medication.\u003c\/p\u003e\n\u003ch2\u003eKey Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Spectrum of Action:\u003c\/strong\u003e Effective against gram-positive bacteria like Streptococcus and Aeromonas species.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEffective Against Common Infections:\u003c\/strong\u003e Treats fin rot, gill disease, mouth fungus, and other bacterial conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Application:\u003c\/strong\u003e Tablets dissolve quickly in water for simple dosing or can be applied with food.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Healing Support:\u003c\/strong\u003e Reduces fish stress and promotes visible recovery within days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLimits Infection Spread:\u003c\/strong\u003e Stops infections before they can affect other healthy fish in your tank.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDirections for Use\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAdd one 500mg tablet per 20 gallons of aquarium water.\u003c\/li\u003e\n\u003cli\u003eRepeat dosage every 24 hours for 5–10 days depending on the severity of the infection.\u003c\/li\u003e\n\u003cli\u003eMake a partial water change between treatments to maintain water quality.\u003c\/li\u003e\n\u003cli\u003eIf no improvement is seen within 5 days, stop use and consult a veterinarian or aquarist.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eStorage Instructions\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eStore tightly closed at 59°–86°F (15°–30°C) in a cool, dry place.\u003c\/li\u003e\n\u003cli\u003eKeep out of reach of children and pets.\u003c\/li\u003e\n\u003cli\u003eDo not use after expiration date printed on packaging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eImportant Cautions\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFor ornamental aquarium use only. Not for use with fish intended for human consumption.\u003c\/li\u003e\n\u003cli\u003eRemove shrimp, snails, and other invertebrates prior to treatment as Penicillin may harm them.\u003c\/li\u003e\n\u003cli\u003eMonitor ammonia, nitrite, and nitrate levels during treatment to ensure healthy tank balance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eShipping \u0026amp; Returns\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e We offer Ground, Express, Priority, and International shipping options. View shipping policy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReturns:\u003c\/strong\u003e Having an issue? Review our refund policy for return instructions.\u003c\/p\u003e\n\u003ch2\u003eFAQs – Fish Pen Penicillin 500mg 60 Tablets\u003c\/h2\u003e\n\u003ch3\u003eWhat infections does Fish Pen treat?\u003c\/h3\u003e\n\u003cp\u003eIt treats gram-positive bacterial infections including fin rot, gill disease, mouth fungus, and columnaris.\u003c\/p\u003e\n\u003ch3\u003eCan I use it in saltwater aquariums?\u003c\/h3\u003e\n\u003cp\u003eYes, Fish Pen is safe for both saltwater and freshwater tanks.\u003c\/p\u003e\n\u003ch3\u003eIs it safe for shrimp and snails?\u003c\/h3\u003e\n\u003cp\u003eNo. Remove invertebrates during treatment to avoid harm.\u003c\/p\u003e\n\u003ch3\u003eDoes it impact beneficial bacteria?\u003c\/h3\u003e\n\u003cp\u003eYes, to a degree. Monitor water quality and supplement beneficial bacteria post-treatment if needed.\u003c\/p\u003e\n\u003ch3\u003eWill it discolor water?\u003c\/h3\u003e\n\u003cp\u003eNo, Fish Pen dissolves clearly and does not affect tank appearance.\u003c\/p\u003e\n\u003ch3\u003eCan I use Fish Pen for betta fish?\u003c\/h3\u003e\n\u003cp\u003eYes, but ensure the proper dosage is used based on smaller tank volumes.\u003c\/p\u003e\n\u003ch3\u003eDoes Fish Pen expire?\u003c\/h3\u003e\n\u003cp\u003eYes, always check the expiration date and use before it passes.\u003c\/p\u003e\n\u003ch3\u003eIs it safe for planted aquariums?\u003c\/h3\u003e\n\u003cp\u003eGenerally, yes. Fish Pen does not harm most common aquarium plants.\u003c\/p\u003e\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFish Pen Penicillin 500mg – 30 Tablets\u003c\/li\u003e\n\u003cli\u003eFish Mox Amoxicillin 250mg – 100 Capsules\u003c\/li\u003e\n\u003cli\u003eFish Flex Cephalexin 500mg – 100 Capsules\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable style=\"width: 72.2183%; height: 259px;\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 312.6px;\"\u003e\n\u003ctd style=\"width: 49.7738%; height: 312.6px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.7738%; height: 312.6px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Fish Antibiotics","offers":[{"title":"Default Title","offer_id":51911121076507,"sku":"AS-022-AF","price":89.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/4353\/0779\/files\/FishPenicillin500mg60Tablets.png?v=1773851062"},{"product_id":"fish-penicillin-250mg-100-tablets-powerful-broad-spectrum-fish-antibiotic","title":"Fish Penicillin 250mg 100 Tablets – Powerful Broad-Spectrum Fish Antibiotic","description":"\u003ch1\u003eFish Penicillin 250mg 100 Tablets\u003c\/h1\u003e\n\u003ch2\u003eBroad-Spectrum Antibiotic for Aquarium Fish\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFish Penicillin\u003c\/strong\u003e (Penicillin 250mg) is a reliable antibiotic used to control and treat common bacterial infections in ornamental fish, including \u003cem\u003efin rot, gill disease, tail ulcers, and body infections\u003c\/em\u003e. Designed for aquarium use, this pharmaceutical-grade formula helps restore fish health safely and effectively.\u003c\/p\u003e\n\u003ch2\u003eKey Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTreats gram-positive bacterial infections in fish\u003c\/li\u003e\n\u003cli\u003eIdeal for fin rot, ulcers, and wound infections\u003c\/li\u003e\n\u003cli\u003eHigh-quality Penicillin 250mg tablets\u003c\/li\u003e\n\u003cli\u003eSafe for use in aquariums and ornamental ponds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDirections for Use\u003c\/h2\u003e\n\u003cp\u003eAdd one tablet (250mg) per 40 gallons of water. Repeat every 24 hours for 5–10 days, performing a partial water change between treatments. Discontinue if no improvement is observed after 5 days.\u003c\/p\u003e\n\u003ch2\u003eStorage\u003c\/h2\u003e\n\u003cp\u003eKeep tightly sealed at room temperature (59°–86°F \/ 15°–30°C). For aquarium use only.\u003c\/p\u003e","brand":"Fish Care Lab","offers":[{"title":"Default Title","offer_id":51911121109275,"sku":null,"price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/4353\/0779\/files\/ChatGPT_Image_6_dec._2025_19_53_09_1024x1024_6d6ac4fc-6fd3-4a25-9fd9-f80f978d1c3e.webp?v=1773851296"}],"url":"https:\/\/birdantibiotic.com\/collections\/fish-pen.oembed","provider":"BirdAntibiotic.com | Bird \u0026 Poultry Antibiotics, Supplements \u0026 Care","version":"1.0","type":"link"}