BioGuard Erase Iron Stain Remover

BioGuard Erase Iron Stain Remover is specifically formulated to combat iron-based stains, restoring your pool surfaces to their former beauty. Its proprietary granular formula can be added directly to pool water over the trouble areas, and is compatible with plaster, tile, and vinyl surfaces to accommodate virtually all pools. It can even be used to remove cobalt staining on fiberglass pools! Best of all, Erase Iron Stain Remover is made by BioGuard, an industry leader for decades, allowing you to buy with confidence. Directions: Pre-Treatment: If your swimming pool is equipped with a heater, first turn the heater off, then isolate from the circulation system. In order to prevent damage to your swimming pool, do not allow un-dissolved particles to sit on surfaces for more than 30 seconds. Adjust the chlorine/bromine residual to less than 1 ppm (for Softswim pools, a B residual of 30 to 50 ppm). Adjust pH to between 7.0 to 7.4. Adjust alkalinity to between 125 to 150 ppm (or 80 to