Prime is the complete and concentrated conditioner for both fresh and salt water. Prime removes chlorine chloramine and ammonia. Prime converts ammonia into a safe nontoxic form that is readily removed by the tanks biofilter. Prime may be used during tank cycling to alleviate ammonianitrite toxicity. Prime detoxifies nitrite and nitrate allowing the biofilter to more efficiently remove them. Prime also promotes the production and regeneration of the natural slime coat. Prime is nonacidic and will not impact pH. Prime will not overactivate skimmers. Use at startup and whenever adding or replacing water. DIRECTIONS Use 1 capful 5 mL for each 200 L 50 gallons of new water. For smaller doses please note each cap thread is approx. 1 mL. This dose removes approximately 0.6 mgL ammonia 3 mgL chloramine or 4 mgL chlorine. May be added to aquarium directly but better if added to new water first. If adding directly to aquarium base dose on aquarium volume. Sulfur odor is normal. For exceptionally high chloramine concentrations a double dose may be used safely. To detoxify nitrite in an emergency up to 5 times normal dose may be used. If temperature is andgt 30 C 86 F and chlorine or ammonia levels are low use a half dose. Prime is the complete and concentrated conditioner for both fresh and salt water. Prime removes chlorine, chloramine and ammonia. Prime converts ammonia into a safe, non-toxic form that is readily removed by the tank's biofilter. Prime may be used during tank cycling to alleviate ammonia/nitrite toxicity. Prime detoxifies nitrite and nitrate, allowing the biofilter to more efficiently remove them. It will also detoxify any heavy metals found in the tap water at typical concentration levels. Prime also promotes the production and regeneration of the natural slime coat. Prime is non-acidic and will not impact pH. Prime will not overactivate skimmers. Use at start-up and whenever adding or replacing water.