Fritz Slime Out aids in the removal of stains from cyanobacteria outbreaks. Effective against blue-green, black, red, and bubble cyanobacteria strains. Fritz Slime Out is safe to use in fresh and saltwater applications with invertebrates, corals, plants, and all fish species. This simple treatment quickly removes stains within 48 hours and does not affect biological filtration. Pair with FritzZyme 360 or 460 to reduce nutrients and help prevent future outbreaks. Quickly Eliminates Stains from Cyanobacteria. Results After One Treatment. Safe for Fresh and Saltwater Systems.