TetraPond AquaSafe Makes tap water safe for fish and other pond inhabitants. - neutralises chlorine and chloramines - immediately and effectively binds toxic heavy metals, such as copper and cadmium - organic colloids protect the fish’s delicate mucus membrane - vitamin B1 helps maintain a healthy immune system and the fishes’ ability to cope with stress - ideal for making pond water safe after longer periods of rainfall, after each partial water change, and during the initial filling of the pond