Removes Chlorine, Chloramines, & Ammonia in all Marine, Reef, and Freshwater Aquaria Overview Removes chloramines, chlorine, ammonia, and nitrites present in tap water and/or aquarium water. May be used to neutralize iodine in the event of an aquarium overdose. Used as directed, is safe for use directly in all marine and freshwater aquaria. Free of phosphate and silicate. Formulated by a marine scientist.