{"product_id":"fritz-maracyn","title":"Fritz Maracyn","description":"\u003cp\u003e\u003cstrong\u003eFritz Maracyn\u003c\/strong\u003e is a broad-spectrum erythromycin antibiotic for ornamental fish, compounded to dissolve gradually and completely in water. It targets gram-positive bacteria, the culprits behind body fungus (columnaris), bacterial gill disease, popeye, mouth fungus, open lesions, hemorrhagic septicemia, and slime disease. Packet form makes dosing simple: one packet treats 10 gallons.\u003c\/p\u003e\n\u003cp\u003eBrowse our full \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/medication\"\u003emedication\u003c\/a\u003e lineup or the rest of our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/fritz\"\u003eFritz range\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3 style=\"margin: 14px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #1E88E5; padding-left: 8px;\"\u003eWhat It Treats\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGram-positive bacterial infections:\u003c\/strong\u003e body fungus (columnaris), bacterial gill disease, popeye, mouth fungus, open lesions, hemorrhagic septicemia, and slime disease.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWatch for these symptoms:\u003c\/strong\u003e clamped fins, white or fuzzy patches, cloudy eyes, frayed fins, lethargy, and fish rubbing on decor. Suspected bacterial infections should be treated promptly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreshwater and saltwater:\u003c\/strong\u003e safe to use in both systems when dosed as directed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePairs with Maracyn Two:\u003c\/strong\u003e if symptoms point to gram-negative bacteria, or a 5 day course brings no improvement, step up to \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fritz-maracyn-2\"\u003eFritz Maracyn 2\u003c\/a\u003e. The two can be used together for broad coverage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin: 14px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #1E88E5; padding-left: 8px;\"\u003eDosing\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDays 1 through 5:\u003c\/strong\u003e add the contents of one packet per 10 gallons of water every 24 hours.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDay 6:\u003c\/strong\u003e perform a 25 percent water change.\u003c\/li\u003e\n\u003cli\u003eRepeat the 5 day course once if symptoms improved but have not fully cleared. If there is no improvement, switch to Maracyn 2.\u003c\/li\u003e\n\u003cli\u003eRemove activated carbon during treatment, keep aeration strong, and treat in a quarantine tank for best results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin: 14px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #1E88E5; padding-left: 8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #BBDEFB; padding: 8px; background: #E3F2FD; width: 35%;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #BBDEFB; padding: 8px;\"\u003eFritz Maracyn\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #BBDEFB; padding: 8px; background: #E3F2FD;\"\u003e\u003cstrong\u003eActive Ingredient\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #BBDEFB; padding: 8px;\"\u003eErythromycin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #BBDEFB; padding: 8px; background: #E3F2FD;\"\u003e\u003cstrong\u003eTargets\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #BBDEFB; padding: 8px;\"\u003eGram-positive bacteria\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #BBDEFB; padding: 8px; background: #E3F2FD;\"\u003e\u003cstrong\u003eDose\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #BBDEFB; padding: 8px;\"\u003e1 packet per 10 gallons daily for 5 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #BBDEFB; padding: 8px; background: #E3F2FD;\"\u003e\u003cstrong\u003eSizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #BBDEFB; padding: 8px;\"\u003e10 count box, 20 count box, 100 g bulk jar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #BBDEFB; padding: 8px; background: #E3F2FD;\"\u003e\u003cstrong\u003eWater Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #BBDEFB; padding: 8px;\"\u003eFreshwater and saltwater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #BBDEFB; padding: 8px; background: #E3F2FD;\"\u003e\u003cstrong\u003eMade In\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #BBDEFB; padding: 8px;\"\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin: 14px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #1E88E5; padding-left: 8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCover gram-negative infections with \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fritz-maracyn-2\"\u003eFritz Maracyn 2\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eConfirm water quality is not the root cause with a kit from \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/water-testing\"\u003ewater testing\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eRecondition after treatment with \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/seachem-prime-complete-concentrated-water-conditioner\"\u003eSeachem Prime\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin: 14px 0 4px; font-size: 1.05em; font-weight: 600; line-height: 1.25; border-left: 4px solid #1E88E5; padding-left: 8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eMaracyn or Maracyn 2, which one do I need?\u003c\/strong\u003e\u003cbr\u003eMaracyn (erythromycin) targets gram-positive bacteria like columnaris and bacterial gill disease. Maracyn 2 (minocycline) targets gram-negative infections like fin rot, dropsy, and septicemia. When in doubt, bring us a photo or a water sample and we will help you narrow it down.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need to remove my filter media?\u003c\/strong\u003e\u003cbr\u003eRemove activated carbon only, it will strip the medication out of the water. Keep biological media running and watch ammonia, since antibiotics can knock back nitrifying bacteria.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it safe for plants, snails, and shrimp?\u003c\/strong\u003e\u003cbr\u003eErythromycin is generally well tolerated in planted and invert tanks when dosed correctly, but a quarantine tank is always the safer and cheaper way to medicate.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use the whole 5 day course in my display tank?\u003c\/strong\u003e\u003cbr\u003eYou can, but a QT tank uses far less medication, protects your biofilter, and lets the sick fish recover without competition.\u003c\/p\u003e","brand":"Fritz","offers":[{"title":"10 Count","offer_id":48866022654171,"sku":"46001","price":15.99,"currency_code":"USD","in_stock":true},{"title":"20 Count","offer_id":48866022621403,"sku":"46002","price":22.39,"currency_code":"USD","in_stock":true},{"title":"100g Jar","offer_id":48866044444891,"sku":"46046","price":87.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/FRITZ_MARACYN_20PK.jpg?v=1781188840","url":"https:\/\/squeakysaquatics.com\/products\/fritz-maracyn","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}