Aquascape Pond Detoxifier makes pond water safe for fish and plants, allowing you to spend more time enjoying your fish and less time worrying about them. Source water, inlcuding tap and well water, often contains chlorine, chloramines, and heavy metals and it is important to eliminate any toxins in your pond water to ensure the health of your ecosystem. Pond Dextoxifier removes and detoxifies chlorine, neutralizes ammonia, and detoxofies and chelates copper and heavy metals that can harm pond fish and aquatic plants. Pond Detoxifier also allows some metals, like iron, to be used as a fertilizer, helping your plants to thrive. One ounce treats 600 gallons of water. The economical refill pouch treats up to 20, 000 gallons of water to help you save money.