PondCare Chlorine & Heavy Metal NeutralizerAPI Pond Chlorine and Heavy Metal Neutralizer instantly neutralizes chlorine, copper, lead and zinc, as well as other heavy metals found in tap and well water, all of which may be toxic to fish and plants. Dechlorinator removes chlorine and detoxifies heavy metals Instantly prepares tap water for plants and fish Recommended for pond setup or water change Recommended for use when setting up a pond, changing water or whenever rain runoff has added water