There are many harmful gases in the water that can cause damage to the aquarium fish and deteriorate their health and life. Ocean Free Anti Chlorine Special Aquarium Water Conditioner is a useful anti-chlorine solution that helps in removing these harmful gases and improving the water quality. The conditioner is made up of nontoxic and completely safe materials that will not cause any harm to the fish or aquatic plants even when excessively used. It helps in getting rid of heavy metals from the water like arsenic, mercury, or cyanide. These metals are generally found in lakes and spring water and may cause harm to the fish.