BioGuard SOFTSWIM STAIN CONTROL (1 Quart) (BIGUANIDE POOLS ONLY)
Always use in any water where dissolved metals (such as iron, copper and manganese) are present. Metals can rapidly destroy SoftSwim C. Add SoftSwim Stain Control when opening or starting up a pool. It can be used to enhance the longevity of SoftSwim C.
(BIGUANIDE POOLS ONLY)