Hot Tub Defoamer - Pool, Fountain, & Spa - Antifoam Concentrate - Silicone Emulsion - Quickly Removes & Prevents Foam in Water - Eco Friendly & Safe Formula - No Harsh Chemicals - 1/2 Gallon (64 oz.) is a Pools Hot Tubs & Supplies option for everyday use, business supply needs, resale shelves, or household stocking. Review product size, pack count, and shipping details before checkout.