Only caribseas aragalive contains not just the broad spectrum of natural marine bacteria found in the ocean but additional specifically selected strains of marine bacteria aswellr aragalive helps control dangerous ammonia levels and reduces nitrate and nitrite aragalive creates a natural biological balance and makes cycling a new aquarium safer and fasterr for use in all marine and reef tanks including plenums nitrate reduction beds sumps fish tanks and morer the entire caribsea range