Prime, 4 L / 1 fl. gal. Prime Is The Complete And Concentrated Conditioner For Both Fresh And Salt Water Removes Chlorine, Chloramine And Ammonia; Prime Converts Ammonia Into A Safe Nontoxic Form That Is Readily Removed By The Tank'S Biofilter May be used during tank cycling to alleviate ammonia and nitrite toxicity Detoxifies Nitrite And Nitrate Allowing The Biofilter To More Efficiently Remove Them Promotes The Production And Regeneration Of The Natural Slime Coat