Defender 32oz. $24.99 Add to cart Add to Wishlist Category: Spa Chemicals Description Description A concentrated formula developed to help prevent scale formation, use weekly for continued protection. Related products Renew – Spa Shock $32.99 – $75.99 Select options Filter Clean $14.99 – $29.99 Select options Bromine – Spa Dispenser $19.95 Add to cart Test Strips $14.99 Add to cart