Prime Is The Complete And Concentrated Conditioner For Both Fresh And Saltwater. Prime Removes Chlorine, Chloramine And Detoxifies 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.