API Stress Zyme+ 473ml

API Stress Zyme+ contains a highly concentrated blend of live aerobic and anaerobic bacteria that colonize filter media and substrate to break down toxic ammonia and nitrite through the nitrogen cycle. The formula helps establish new aquariums, boosts filter performance after medication use, and supports the biofilter in heavily stocked tanks. Regular weekly dosing improves filter efficiency, reduces organic waste buildup, and maintains cleaner gravel. The standard dose is 5ml per 38L weekly. Safe for all freshwater fish, plants, and invertebrates, and can be used alongside Stress Coat+ during water changes.