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 Enzyme $21.99 Add to cart Cover Care & Conditioner 16oz. $19.99 Add to cart Spa Up / pH Up 2 lbs $14.99 Add to cart FROG @Ease 3-Pack Replacements (for Spas) $54.99 Add to cart