Check the listing for details. API AQUARIUM TAP WATER CONDITIONER SUPER STRENGTH 16 OUNCE. Condition: New. Listed at 18.75 USD. API AQUARIUM TAP WATER CONDITIONER SUPER STRENGTH 16 OUNCE Auction is for ( 1 ) : API AQUARIUM TAP WATER CONDITIONER SUPER STRENGTH 16 OUNCE 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. For use in fresh or salt water. 16 oz. bottle (473 ml) Treats 9,640 U.S. gallons Please feel free to contact me for combined auction shipping rates or with any questions or concerns that you may have about my products. Thank you !