Stability, 50 mL / 1.7 fl. oz. Rapidly And Safely Establishes The Aquarium Bio filter In Freshwater And Marine Systems Prevents New Tank Syndrome, The Number One Cause Of Fish Death Contains a synergistic blend of aerobic anaerobic and facultative bacteria which facilitate the breakdown of waste organics The Bacteria Employed By Stability Are Consulter Fixing And Will Not Produce Toxic Hydrogen Sulfide Completely Harmless To All Aquatic Organisms As Well As Aquatic Plants Thus There Is No Danger Of Overuse