Check the listing for details. API Tap Water Conditioner 16oz Dechlorinates Water and Detoxifies Heavy Metals. Condition: New. Listed at 15.99 USD. API Tap Water Conditioner 16oz API TAP WATER CONDITONER treatment removes toxins from tap water instantly, so you can add fish to your aquarium (or add them back after a water change) immediately. API TAP WATER CONDITIONER treatment dechlorinates aquarium and tap water, detoxifies heavy metals, and may be used in both fresh and salt water. This super-concentrated formula treats up to 600 US gallons with just one ounce, making your aquarium a safe environment for your fish.API TAP WATER CONDITIONER treatment is a dechlorinator that works to eliminate harmful chlorine, chloramines, and heavy metals from the tap water you add to your aquarium, making it a safe and livable environment for your fish.Instructions: Add 1 ml. for each 20 gallons of aquarium water.Size: 16 oz.