Fritz Zyme 9

FritzZyme® 9 is a live nitrifying bacteria solution formulated specifically for saltwater and brackish aquariums above 15 ppt salinity. It rapidly establishes beneficial bacterial colonies in your biofilter, safely reducing ammonia and nitrite levels that can become lethal within days. Unlike natural cycling, which takes weeks, FritzZyme® 9 accelerates the process, enabling faster and safer livestock introduction. The product requires no refrigeration and maintains a one-year shelf life. Use it when setting up new systems, after maintenance, water changes, or filter media replacement. Safe for all species including invertebrates and plants, it won't cloud your water or interfere with other treatments. Backed by over 30 years of proven success from Fritz Aquatics, this is true live nitrifying bacteria—not spore-based alternatives—trusted by professional facilities worldwide.