Defender 32oz. View cart “303 Aerospace Protectant Spray 32oz” 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 Enzyme $21.99 Add to cart Spa Up / pH Up 2 lbs $14.99 Add to cart Filter Clean $14.99 – $29.99 Select options Mineral Purifier Spa Frog $41.99 Add to cart