Anti-Chlorine is an advanced water conditioner for freshwater ponds. Untreated tap water contains toxic chlorine and heavy metal substances that make it unsafe for all aquatic organisms. Anti-Chlorine rapidly conditions tap water by removing toxic chlorine and heavy metals such as Zinc and Copper whilst providing fish with a natural protective slime coating. This coating can be damaged during netting, spawning, injury, disease and other times of stress. Anti-Chlorine needs to be used whenever a water change is made and tap water is added to a pond containing aquatic organisms. Always treat water with this remedy to protect your fish and also use as a stress reliever.