Filter Fresh 16oz. (Filter Cleaner) April 3, 2017 MasterSpasAdmin $9.95 Add to cart Add to Wishlist Category: Spa Chemicals Description Description Restores the cartridge filter to its maximum efficiency by removing dirt, organic matter, oil and grease residue, soap and minerals. Related products 303 Aeroprotectant Spray $16.95 Add to cart Filter Cleaner Spray $11.95 Add to cart Foam Out 32oz. $18.95 Add to cart Prefilter $21.95 Add to cart