Defender 32oz. View cart “Spa Down / pH Down 2.5 lbs” 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 Jet Clean 16oz. $14.99 Add to cart Renew – Spa Shock $32.99 – $75.99 Select options Test Strips $14.99 Add to cart Bromine – Spa Dispenser $19.95 Add to cart