STABILITY sets quickly and safely the biological filter in freshwater aquariums and saltwater, preventing the leading cause of mortality of fish: the "new tank syndrome" Stability is formulated specifically for aquarium and contains a synergistic compound of aerobic bacteria , facultative anaerobes and facilitating the elimination of organic waste, ammonia, nitrite and nitrate. In contrast to competing products, we do not add sulfur and not produce the toxic hydrogen sulphide. Estability is totally harmless to all aquatic organisms and plants, so we do not run the risk of overdose. Stability is the culmination of research and development over the last decade and represents the latest technology in terms of natural biological treatment.