{"product_id":"fritzzyme-7-freshwater-live-nitrifying-bacteria","title":"FritzZyme 7 Freshwater | Live Nitrifying Bacteria for Aquarium Cycling","description":"\u003cp\u003eFritzZyme 7 is a live nitrifying bacteria specifically formulated for freshwater aquariums. Add it to a brand-new tank or any system that needs a biological boost — the live bacteria seed your biofilter, removing toxic ammonia and nitrite so livestock can be added safely. Pair it with the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fritz-6-in-1-aquarium-test-strips-100-count\"\u003eFritz 6-in-1 Test Strips\u003c\/a\u003e to monitor your cycle, and browse our full \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003eaquarium additives \u0026amp; supplements\u003c\/a\u003e selection.\u003c\/p\u003e\n\u003ch3\u003eWhy Choose FritzZyme 7\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue nitrifying bacteria\u003c\/strong\u003e — the actual species used by professional zoos, public aquariums, universities, and aquaculture facilities.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuickly removes ammonia and nitrite\u003c\/strong\u003e from new and established tanks, reducing fish loss during cycling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe for new tanks and existing systems\u003c\/strong\u003e — no risk to fish, plants, or invertebrates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreshwater-specific strains\u003c\/strong\u003e for community tanks, planted aquariums, goldfish bowls, and ponds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e30+ years of proven success\u003c\/strong\u003e — Fritz Aquatics was the first company to commercially produce nitrifying bacteria for the aquarium hobby.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the USA\u003c\/strong\u003e by Fritz Aquatics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to Use\u003c\/h3\u003e\n\u003cp\u003eAdd FritzZyme 7 any time the biofilter needs fortification:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNew tank setup\u003c\/strong\u003e — dose before adding livestock to seed the biofilter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAfter water changes\u003c\/strong\u003e — especially large changes that may stress the colony.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAfter filter cleaning\u003c\/strong\u003e — aggressive scrubbing can knock back beneficial bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdding new livestock\u003c\/strong\u003e — supports the bioload increase before ammonia spikes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuring or after medication\u003c\/strong\u003e — some treatments harm nitrifying bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhen changing filter media\u003c\/strong\u003e — reseed the bacterial colony immediately.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Dose\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eShake the bottle vigorously to suspend the live bacteria.\u003c\/li\u003e\n\u003cli\u003eAdd the dose directly to the aquarium near a flow source so it disperses through the system.\u003c\/li\u003e\n\u003cli\u003eFollow the dosing instructions printed on the bottle for your tank size.\u003c\/li\u003e\n\u003cli\u003eTest ammonia and nitrite during cycling and be patient — standard FritzZyme 7 cycles a tank in roughly two to three weeks. For a 5-day cycle, use the 15×-concentrated \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fritzzyme-turbostart-700-freshwater-nitrifying-bacteria\"\u003eFritzZyme TurboStart 700\u003c\/a\u003e instead.\u003c\/li\u003e\n\u003cli\u003eAvoid running UV sterilizers or ozone for 24 hours after dosing; both can kill the bacteria before they colonize.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eFritzZyme 7 vs. TurboStart 700\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px; font-weight:bold; width:35%;\"\u003eFritzZyme 7\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eStandard concentration — best value for routine maintenance dosing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px; font-weight:bold;\"\u003eFritzZyme TurboStart 700\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e15× more concentrated — cycles a brand-new tank in 5 days or less.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px; font-weight:bold; width:35%;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eFritz Aquatics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px; font-weight:bold;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eLive nitrifying bacteria — freshwater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px; font-weight:bold;\"\u003eUse With\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eFreshwater aquariums, planted tanks, ponds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px; font-weight:bold;\"\u003eAvailable Sizes\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e8 oz, 16 oz, 32 oz, and 1 Gallon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px; font-weight:bold;\"\u003eStorage\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eCool, dark place — do not freeze\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px; font-weight:bold;\"\u003eMade In\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fritz-6-in-1-aquarium-test-strips-100-count\"\u003eFritz 6-in-1 Test Strips\u003c\/a\u003e — monitor ammonia and nitrite during cycling.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fritz-master-test-kit-freshwater-saltwater-aquarium\"\u003eFritz Master Test Kit\u003c\/a\u003e — confirm strip readings to the parts-per-million with liquid drop tests.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fritz-complete-water-conditioner\"\u003eFritz Complete Water Conditioner\u003c\/a\u003e — detoxify chlorine, chloramine, and ammonia before adding livestock.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fritzzyme-turbostart-700-freshwater-nitrifying-bacteria\"\u003eFritzZyme TurboStart 700\u003c\/a\u003e — the 15×-concentrated version for fast new-tank cycling.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/fritz\"\u003eBrowse all Fritz Aquatics products\u003c\/a\u003e at Squeaky’s Aquatics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow quickly will FritzZyme 7 cycle a new tank?\u003c\/strong\u003e\u003cbr\u003eStandard FritzZyme 7 cycles a tank in roughly 2–3 weeks. For an instant cycle (5 days or less), use the 15×-concentrated TurboStart 700 instead.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it work in saltwater?\u003c\/strong\u003e\u003cbr\u003eNo — FritzZyme 7 is freshwater-specific. Fritz makes a saltwater version (FritzZyme 9) for marine systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need to turn off my UV sterilizer?\u003c\/strong\u003e\u003cbr\u003eYes — turn off UV, ozone, and any chemical filtration (carbon, Purigen) for 24–48 hours after dosing so the bacteria can colonize the biofilter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it expire?\u003c\/strong\u003e\u003cbr\u003eYes — the bottle has a printed expiration date. Live bacteria gradually lose viability, especially when stored warm. Buy the size your tank will use within the freshness window and store cool.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it safe with sensitive fish, plants, or shrimp?\u003c\/strong\u003e\u003cbr\u003eYes. FritzZyme 7 is non-toxic to fish, plants, snails, and shrimp at any reasonable dose.\u003c\/p\u003e","brand":"Fritz","offers":[{"title":"8oz","offer_id":48074318119131,"sku":"80207","price":8.79,"currency_code":"USD","in_stock":true},{"title":"16oz","offer_id":48074318151899,"sku":"80209","price":12.79,"currency_code":"USD","in_stock":true},{"title":"32oz","offer_id":48074326868187,"sku":"80210","price":23.19,"currency_code":"USD","in_stock":true},{"title":"1 Gallon","offer_id":48074318184667,"sku":"80223","price":87.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/unnamed_4bde89e6-f9c8-4daf-ac76-d6fd70121c07.jpg?v=1784133055","url":"https:\/\/squeakysaquatics.com\/products\/fritzzyme-7-freshwater-live-nitrifying-bacteria","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}