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 Bright & Clear 32oz. $21.99 Add to cart 303 Aerospace Protectant Spray 32oz $32.95 Add to cart Renew – Spa Shock $32.99 – $75.99 Select options Scum Balls – 2 pack $14.99 Add to cart