Large Treatments – Each 500ml bottle of Chlorine Klear treats up to 12,500 litres of water. Easy to Use – Due to our accurate dosing chamber, treatments are really easy to measure & follow. This can be used when doing a water change, topping up the pond or after heavy rainfall. Protects Fish –By safely removing harmful substance found in tap water, Chlorine Klear ensures that your fish are healthy and safe. Safe for all Fish & Wildlife – Removing all the harmful substances found in tap water, our dechlorinator is completely safe for all fish, wildlife & plants. Makes Tap Water Safe – Envii Chlorine Klear will immediately remove all chlorine and chloramines from tap water added into your pond.