AquaBella is a revolutionary biological water treatment product that incorporates both aerobic and anaerobic bacteria to break down ammonia, nitrates and nitrites to reduce stress on fish; reduces phosphates to prevent algae bloom; improves water clarity; and reduces odors. AquaBella is an environmentally friendly product to be used in Salt Water Aquariums and Salt Water Reef Tanks. AquaBella is an excellent product for maintaining aquariums and suggested use assures a clean, crystal clear environment for your aquatic pets. No water changes for one year - guaranteed. Good for up to 125 gallons. No water changes for one year - guaranteed