Renders tap water clean for aquarium use. Highly concentrated and economical. Prime makes tap water clean for aquarium use by removing chlorine and chloramine. It degrades chloramine to ammonia, which is then detoxified by the product. It also detoxifies nitrites and nitrates. It is a neutral product which does not modify the pH, and does not saturate the skimmers in sea water. It also stimulates the production of mucus for the fish increasing its immune system. Prime is a very concentrated product, and therefore very economical. 2 l treat 80000 l.