Defender 32oz. View cart “Metal Gon 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 Bio Ouster Portable Hot Tub Watercare Kit $99.95 Add to cart FROG @Ease 3-Pack Replacements (for Spas) $54.99 Add to cart Test Strips $14.99 Add to cart Spa 56 – Chlorinating Granules $32.99 – $75.99 Select options