{"product_id":"fix-pen-penicillin-250mg-500mg-capsules-30-60-100-count-bottles","title":"Fix Pen (Penicillin) - 250mg \u0026 500mg Capsules - 30, 60, \u0026 100 Count Bottles","description":"\u003ch2\u003eFix Pen (Penicillin) 250mg \u0026amp; 500mg Capsules\u003c\/h2\u003e\n\u003cp\u003eFix Pen (Penicillin) provides targeted broad-spectrum antibacterial care formulated for ornamental marine and freshwater fish. Available in both 250 mg and 500 mg strength options, it is designed to combat common bacterial pathogens in aquarium setups, helping to halt systemic infections and localized skin lesions to protect your aquatic environment. The pull-apart capsules dissolve cleanly into aquarium water to deliver pure antibiotic action without dyes or unnecessary fillers.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures and Benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTargeted Antibacterial Power:\u003c\/strong\u003e Exerts a bactericidal effect against susceptible bacterial strains affecting ornamental fish.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible Strength Options:\u003c\/strong\u003e Offered in 250 mg and 500 mg capsule strengths to allow accurate dosing across various aquarium sizes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePure Active Ingredients:\u003c\/strong\u003e Formulated with high-grade penicillin and zero artificial additives or dyes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBroad Aquatic Support:\u003c\/strong\u003e Effective in treating common conditions including fin rot, tail rot, infected eyes, pop-eye, and body ulcerations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- ACCORDION 1: Usage Guidelines \u0026 Instructions --\u003e\n\u003cdetails open style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 10px; background-color: #f9fafb; overflow: hidden;\"\u003e\n  \u003csummary style=\"padding: 14px 18px; font-weight: 600; font-size: 16px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: #000000;\"\u003e\n    \u003cspan\u003eUsage Guidelines \u0026amp; Instructions\u003c\/span\u003e\n    \u003cspan style=\"width: 24px; height: 24px; border-radius: 50%; background-color: #eef2ff; color: #4f46e5; display: inline-flex; align-items: center; justify-content: center; font-size: 14px; font-weight: bold;\"\u003e−\u003c\/span\u003e\n  \u003c\/summary\u003e\n  \u003cdiv style=\"padding: 16px 18px; background-color: #ffffff; font-size: 14px; line-height: 1.6; color: #000000; border-top: 1px solid #e5e7eb;\"\u003e\n    \u003cdiv style=\"margin-bottom: 12px; padding: 12px; border: 1px solid #e5e7eb; border-radius: 6px; background-color: #f9fafb;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 4px;\"\u003e1. Quarantine Setup \u0026amp; Water Preparation\u003c\/strong\u003e\n      Isolate sick fish in a dedicated quarantine or hospital tank prior to dosing. Turn off UV sterilizers and remove chemical filtration media (such as activated carbon), as these pull active penicillin from the water. Perform a partial water change before the initial dose to reduce organic waste.\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"margin-bottom: 12px; padding: 12px; border: 1px solid #e5e7eb; border-radius: 6px; background-color: #f9fafb;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 4px;\"\u003e2. Aquarium Dosing Instructions\u003c\/strong\u003e\n      Add the contents of one 250 mg capsule per 10 gallons (38 L) or one 500 mg capsule per 20 gallons (76 L) of aquarium water. Separate the capsule halves, pre-dissolve the powder into a small cup of tank water, and pour evenly across the water surface. Repeat the dosage every 24 hours for 5 to 10 consecutive days. Conduct a partial water change between treatments. Discontinue use and consult a veterinarian if no improvement is noted within 5 days.\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"margin-bottom: 12px; padding: 12px; border: 1px solid #e5e7eb; border-radius: 6px; background-color: #f9fafb;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 4px;\"\u003e3. Administration in Non-Food Avian Species\u003c\/strong\u003e\n      Fix Pen may be administered to non-food pet birds (such as pigeons) strictly under the direct guidance, diagnosis, and prescribed dosage schedule of a licensed avian veterinarian. Follow veterinary orders exclusively regarding preparation in soft food or drinking water.\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"padding: 12px; border: 1px solid #e5e7eb; border-radius: 6px; background-color: #f9fafb;\"\u003e\n      \u003cstrong style=\"display: block; margin-bottom: 4px;\"\u003e4. Water Quality Management \u0026amp; Post-Treatment Care\u003c\/strong\u003e\n      Maintain strong aeration and monitor water parameters like ammonia and nitrite daily during medication. Complete the full course of therapy to prevent symptom relapse. Upon completion, perform a partial water change and reintroduce activated carbon filtration to clear residual medication from the tank.\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c!-- ACCORDION 2: How Fix Pen Works (CLOSED BY DEFAULT) --\u003e\n\u003cdetails style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 10px; background-color: #f9fafb; overflow: hidden;\"\u003e\n  \u003csummary style=\"padding: 14px 18px; font-weight: 600; font-size: 16px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: #000000;\"\u003e\n    \u003cspan\u003eHow Fix Pen Works\u003c\/span\u003e\n    \u003cspan style=\"width: 24px; height: 24px; border-radius: 50%; background-color: #eef2ff; color: #4f46e5; display: inline-flex; align-items: center; justify-content: center; font-size: 14px; font-weight: bold;\"\u003e+\u003c\/span\u003e\n  \u003c\/summary\u003e\n  \u003cdiv style=\"padding: 16px 18px; background-color: #ffffff; font-size: 14px; line-height: 1.6; color: #000000; border-top: 1px solid #e5e7eb;\"\u003e\n    \u003cp style=\"margin-top: 0;\"\u003eFix Pen contains penicillin, a beta-lactam antibiotic that exerts a bactericidal effect on target microorganisms.\u003c\/p\u003e\n    \u003cp style=\"margin-bottom: 0;\"\u003eIt works by inhibiting bacterial cell wall synthesis during active multiplication, weakening the cell structure and destroying pathogenic bacteria in the aquatic environment.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c!-- ACCORDION 3: Safety and Tank Notes (CLOSED BY DEFAULT) --\u003e\n\u003cdetails style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 10px; background-color: #f9fafb; overflow: hidden;\"\u003e\n  \u003csummary style=\"padding: 14px 18px; font-weight: 600; font-size: 16px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: #000000;\"\u003e\n    \u003cspan\u003eSafety and Tank Notes\u003c\/span\u003e\n    \u003cspan style=\"width: 24px; height: 24px; border-radius: 50%; background-color: #eef2ff; color: #4f46e5; display: inline-flex; align-items: center; justify-content: center; font-size: 14px; font-weight: bold;\"\u003e+\u003c\/span\u003e\n  \u003c\/summary\u003e\n  \u003cdiv style=\"padding: 16px 18px; background-color: #ffffff; font-size: 14px; line-height: 1.6; color: #000000; border-top: 1px solid #e5e7eb;\"\u003e\n    \u003cp style=\"margin-top: 0;\"\u003e\u003cstrong\u003eCaution:\u003c\/strong\u003e Keep out of reach of children. Fix Antibiotics are for aquarium use only. Intended for ornamental fish and\/or ornamental organisms, and not intended for use with fish that are intended for human consumption.\u003c\/p\u003e\n    \u003cp\u003eAntibiotics can disrupt beneficial nitrifying filter bacteria. Dosing in a separate hospital or quarantine tank is strongly recommended. If treating in a display tank, monitor water parameters daily.\u003c\/p\u003e\n    \u003cp style=\"margin-bottom: 0;\"\u003e\u003cstrong\u003eStorage:\u003c\/strong\u003e Keep container lid tightly closed and store in a cool, dry place at controlled room temperature of 59°–86°F (15°–30°C).\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c!-- ACCORDION 4: Fish Pen vs Fix Pen: What Changed? (CLOSED BY DEFAULT) --\u003e\n\u003cdetails style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 10px; background-color: #f9fafb; overflow: hidden;\"\u003e\n  \u003csummary style=\"padding: 14px 18px; font-weight: 600; font-size: 16px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: #000000;\"\u003e\n    \u003cspan\u003eFish Pen vs Fix Pen: What Changed?\u003c\/span\u003e\n    \u003cspan style=\"width: 24px; height: 24px; border-radius: 50%; background-color: #eef2ff; color: #4f46e5; display: inline-flex; align-items: center; justify-content: center; font-size: 14px; font-weight: bold;\"\u003e+\u003c\/span\u003e\n  \u003c\/summary\u003e\n  \u003cdiv style=\"padding: 16px 18px; background-color: #ffffff; font-size: 14px; line-height: 1.6; color: #000000; border-top: 1px solid #e5e7eb;\"\u003e\n    \u003cp style=\"margin-top: 0; margin-bottom: 12px;\"\u003eIf you previously used legacy brands like Thomas Labs Fish Pen or Fish Pen Forte, those specific lines are discontinued or hard to find. Fix Pen from SourceMax Labs serves as a direct alternative, providing the same active ingredient strengths and capsule format for ornamental fish husbandry.\u003c\/p\u003e\n    \n    \u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 10px;\"\u003e\n      \u003cdiv style=\"padding: 12px; border: 1px solid #e5e7eb; border-radius: 6px; background-color: #f9fafb;\"\u003e\n        \u003cstrong style=\"display: block; margin-bottom: 4px;\"\u003eIdentical Active Penicillin\u003c\/strong\u003e\n        Fix Pen provides pharmaceutical-grade penicillin (250 mg or 500 mg per capsule), matching historical aquarist expectations.\n      \u003c\/div\u003e\n      \u003cdiv style=\"padding: 12px; border: 1px solid #e5e7eb; border-radius: 6px; background-color: #f9fafb;\"\u003e\n        \u003cstrong style=\"display: block; margin-bottom: 4px;\"\u003eUpdated Compliant Packaging\u003c\/strong\u003e\n        Manufactured by SourceMax Labs with clear, modern labeling featuring full dosing instructions and safety notes.\n      \u003c\/div\u003e\n      \u003cdiv style=\"padding: 12px; border: 1px solid #e5e7eb; border-radius: 6px; background-color: #f9fafb;\"\u003e\n        \u003cstrong style=\"display: block; margin-bottom: 4px;\"\u003eDissolving Capsule Format\u003c\/strong\u003e\n        Features pull-apart capsules that dissolve smoothly in water, maintaining the familiar administration process.\n      \u003c\/div\u003e\n      \u003cdiv style=\"padding: 12px; border: 1px solid #e5e7eb; border-radius: 6px; background-color: #f9fafb;\"\u003e\n        \u003cstrong style=\"display: block; margin-bottom: 4px;\"\u003eFresh Factory Inventory\u003c\/strong\u003e\n        Directly supplied from recent production batches complete with clearly printed expiration dates.\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c!-- STANDALONE FAQ SECTION WITH INDIVIDUAL ACCORDION ROWS AND VISUAL SPACING --\u003e\n\u003cdiv style=\"margin-top: 32px; margin-bottom: 16px;\"\u003e\n  \u003ch2 style=\"font-size: 22px; font-weight: 700; color: #000000; margin-bottom: 16px;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n  \u003cdetails style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 10px; background-color: #f9fafb; overflow: hidden;\"\u003e\n    \u003csummary style=\"padding: 14px 18px; font-weight: 600; font-size: 16px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: #000000;\"\u003e\n      \u003cspan\u003eDo I need a prescription to buy Fix Pen?\u003c\/span\u003e\n      \u003cspan style=\"width: 24px; height: 24px; border-radius: 50%; background-color: #eef2ff; color: #4f46e5; display: inline-flex; align-items: center; justify-content: center; font-size: 14px; font-weight: bold;\"\u003e+\u003c\/span\u003e\n    \u003c\/summary\u003e\n    \u003cdiv style=\"padding: 16px 18px; background-color: #ffffff; font-size: 14px; line-height: 1.6; color: #000000; border-top: 1px solid #e5e7eb;\"\u003e\n      No prescription is required. Fix Pen is an over-the-counter medication formulated specifically for ornamental fish and aquarium care.\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 10px; background-color: #f9fafb; overflow: hidden;\"\u003e\n    \u003csummary style=\"padding: 14px 18px; font-weight: 600; font-size: 16px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: #000000;\"\u003e\n      \u003cspan\u003eWhat conditions does penicillin treat in aquarium fish?\u003c\/span\u003e\n      \u003cspan style=\"width: 24px; height: 24px; border-radius: 50%; background-color: #eef2ff; color: #4f46e5; display: inline-flex; align-items: center; justify-content: center; font-size: 14px; font-weight: bold;\"\u003e+\u003c\/span\u003e\n    \u003c\/summary\u003e\n    \u003cdiv style=\"padding: 16px 18px; background-color: #ffffff; font-size: 14px; line-height: 1.6; color: #000000; border-top: 1px solid #e5e7eb;\"\u003e\n      It helps treat bacterial infections including fin rot, tail rot, skin lesions, infected wounds, pop-eye, and gill disease.\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 10px; background-color: #f9fafb; overflow: hidden;\"\u003e\n    \u003csummary style=\"padding: 14px 18px; font-weight: 600; font-size: 16px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: #000000;\"\u003e\n      \u003cspan\u003eCan Fix Pen be used on dogs, cats, or humans?\u003c\/span\u003e\n      \u003cspan style=\"width: 24px; height: 24px; border-radius: 50%; background-color: #eef2ff; color: #4f46e5; display: inline-flex; align-items: center; justify-content: center; font-size: 14px; font-weight: bold;\"\u003e+\u003c\/span\u003e\n    \u003c\/summary\u003e\n    \u003cdiv style=\"padding: 16px 18px; background-color: #ffffff; font-size: 14px; line-height: 1.6; color: #000000; border-top: 1px solid #e5e7eb;\"\u003e\n      No. Fix Pen is strictly labeled and sold for ornamental fish and non-food organisms. It must never be consumed by humans or administered to mammalian pets.\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 10px; background-color: #f9fafb; overflow: hidden;\"\u003e\n    \u003csummary style=\"padding: 14px 18px; font-weight: 600; font-size: 16px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: #000000;\"\u003e\n      \u003cspan\u003eWill Fix Pen impact my tank's biological filter?\u003c\/span\u003e\n      \u003cspan style=\"width: 24px; height: 24px; border-radius: 50%; background-color: #eef2ff; color: #4f46e5; display: inline-flex; align-items: center; justify-content: center; font-size: 14px; font-weight: bold;\"\u003e+\u003c\/span\u003e\n    \u003c\/summary\u003e\n    \u003cdiv style=\"padding: 16px 18px; background-color: #ffffff; font-size: 14px; line-height: 1.6; color: #000000; border-top: 1px solid #e5e7eb;\"\u003e\n      Broad-spectrum antibiotics can affect beneficial nitrifying bacteria in your filter media. Dosing in a separate hospital tank is strongly recommended.\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 10px; background-color: #f9fafb; overflow: hidden;\"\u003e\n    \u003csummary style=\"padding: 14px 18px; font-weight: 600; font-size: 16px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: #000000;\"\u003e\n      \u003cspan\u003eHow do I mix the capsules for tank dosing?\u003c\/span\u003e\n      \u003cspan style=\"width: 24px; height: 24px; border-radius: 50%; background-color: #eef2ff; color: #4f46e5; display: inline-flex; align-items: center; justify-content: center; font-size: 14px; font-weight: bold;\"\u003e+\u003c\/span\u003e\n    \u003c\/summary\u003e\n    \u003cdiv style=\"padding: 16px 18px; background-color: #ffffff; font-size: 14px; line-height: 1.6; color: #000000; border-top: 1px solid #e5e7eb;\"\u003e\n      Pull the capsule open, empty the dry powder into a cup of warm aquarium water, stir thoroughly until dissolved, and add the mixture evenly across the water surface.\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 10px; background-color: #f9fafb; overflow: hidden;\"\u003e\n    \u003csummary style=\"padding: 14px 18px; font-weight: 600; font-size: 16px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: #000000;\"\u003e\n      \u003cspan\u003eShould UV sterilizers and carbon filters be turned off?\u003c\/span\u003e\n      \u003cspan style=\"width: 24px; height: 24px; border-radius: 50%; background-color: #eef2ff; color: #4f46e5; display: inline-flex; align-items: center; justify-content: center; font-size: 14px; font-weight: bold;\"\u003e+\u003c\/span\u003e\n    \u003c\/summary\u003e\n    \u003cdiv style=\"padding: 16px 18px; background-color: #ffffff; font-size: 14px; line-height: 1.6; color: #000000; border-top: 1px solid #e5e7eb;\"\u003e\n      Yes, remove activated carbon and turn off UV sterilizers throughout the treatment duration, as they remove active medication from the water.\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 10px; background-color: #f9fafb; overflow: hidden;\"\u003e\n    \u003csummary style=\"padding: 14px 18px; font-weight: 600; font-size: 16px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: #000000;\"\u003e\n      \u003cspan\u003eHow long should the medication treatment last?\u003c\/span\u003e\n      \u003cspan style=\"width: 24px; height: 24px; border-radius: 50%; background-color: #eef2ff; color: #4f46e5; display: inline-flex; align-items: center; justify-content: center; font-size: 14px; font-weight: bold;\"\u003e+\u003c\/span\u003e\n    \u003c\/summary\u003e\n    \u003cdiv style=\"padding: 16px 18px; background-color: #ffffff; font-size: 14px; line-height: 1.6; color: #000000; border-top: 1px solid #e5e7eb;\"\u003e\n      Daily treatments should run for a minimum of 5 days and no more than 10 days. If no clinical improvement is seen after 5 days, discontinue treatment and consult an aquatic vet.\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e","brand":"Source Max Labs","offers":[{"title":"250mg \/ 30 Capsules","offer_id":53802318561580,"sku":"AS-026-SML","price":45.95,"currency_code":"USD","in_stock":true},{"title":"250mg \/ 100 Capsules","offer_id":53802318594348,"sku":"AS-025-SML","price":85.95,"currency_code":"USD","in_stock":true},{"title":"500mg \/ 30 Capsules","offer_id":53802318659884,"sku":"AS-006-SML","price":52.95,"currency_code":"USD","in_stock":true},{"title":"500mg \/ 60 Capsules","offer_id":53802318627116,"sku":"AS-022-SML","price":79.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0979\/8431\/5692\/files\/999f410b-ea8f-4a11-8b17-63515b304ac5.png?v=1787249193","url":"https:\/\/sourcemaxlabs.com\/products\/fix-pen-penicillin-250mg-500mg-capsules-30-60-100-count-bottles","provider":"Source Max Labs","version":"1.0","type":"link"}