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 tanks 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.