FritzZyme® TurboStart® 700 contains the same proven freshwater strains of effective, live nitrifying bacteria as FritzZyme® 7 but at 15 times the concentration. TurboStart® 700 reduces fish loss due to toxic levels of ammonia and nitrite. Establishing colonies of nitrifying bacteria without FritzZyme® can take weeks; FritzZyme® TurboStart® completely cycles aquariums in five days or less, allowing for safe, immediate addition of livestock. TurboStart® may be added to new tanks or established systems any time the biofilter needs fortification, including after water changes, aggressive cleaning, adding new livestock, medicating or changing filter media.