Natural Chemistry Spa METALfree Spa METALfree deactivates iron, copper and other problem causing trace metals commonly found in spa fill water. Metal ions create water problems like scaling, staining and discoloration. Many municipal water sources have high metal content.
It is strongly recommended that you use Spa METALfree when topping up or re-filling your spa. Spa METALfree deactivates problem causing metals in spa water. It is the strongest, most versatile chelating agent available!