Product Highlights Aqua Essential from API reduces the risk of a fish loss when you’re starting up or operating a fish tank. It instantly removes harmful chemicals like chlorine, ammonia, chloramine, and heavy metals. Makes water safe for freshwater, saltwater, and planted aquariums. Available in a 16 oz bottle. About This Item Treat your source water and instantly provide a safe environment for freshwater fish with API Aqua Essential water conditioner. Most source water supplies contain chlorine, chloramines and ammonia which can cause gill and tissue damage, breathing difficulty, stress and death to fish. This water conditioner and dechlorinator works instantly to remove chlorine and chloramines from tap water and neutralize heavy metals. This water conditioner also removes toxic ammonia, nitrites, and nitrates to restore a healthy aquatic environment when your test results show high levels of ammonia, which is extremely toxic for fish. Features: Reduces the risk of fish loss when starting or maintaining a fish tank Dechlorinator Ammonia Remover