Removes chlorine, chloramine and ammonia, which it converts in a safe, non-toxic for readily removed by the tank s filter. Detoxifies nitrite and nitrate, allowing the biofilter to more efficiently remove them. Will also detoxify any heavy metals found in the tap water at typical concentration levels. Promotes the production and regeneration of the natural slime coat. Non-acidic and will not impact ph, will not overactivate skimmers. Size/Quantity: 100 MILLILITER