Defender 32oz. View cart “Metal Gon & Defender 2 Pack 16oz.” has been added to your cart. $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 Spa Up / pH Up 2 lbs $14.99 Add to cart Aqua Comb $26.99 Add to cart Natural Chemistry Clean & Perfect $24.95 Add to cart Bio Ouster Restoration Plumbing Cleanse $49.95 Add to cart