PONDCARE - Chlorine And Heavy Metal Neutralizer - 16 fl. oz. (473 ml)DESCRIPTION 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. One ounce treats 600 US gallons of pond water. DETAILS Package Description: 16 fl. oz. (473 ml) Serving Size: .. Number of Servings: .. FACTS Ingredients: Tetrasodium Edta. DIRECTIONS Using dosing cap, add 5 ml (1 teaspoon) for each 100 US gallons (378 L) of pond water. WARNINGS