BioGuard Erase Iron Stain Remover

BioGuard Erase Iron Stain Remover is specially formulated for removal of stains and discoloration caused by iron on pool surfaces including vinyl, fiberglass, plaster, and tile. This product can be used as a spot treatment and to lift cobalt stains in fiberglass pools. -Restore the beauty of your pool surfaces  -Compatible with all pool types -Highly effective stain remover Directions Pre-Treatment: 1. If swimming pool is equipped with a heater, first turn the heater off, then isolate from the circulation system 2. In order to prevent damage to swimming pool, do not allow undissolved product to sit on surface for more than 30 seconds  3. Swimming can resume as long as the chlorine or bromine residual is between 1-4ppm and the pH is between 7.2-7.6 Treatment:  1. Adjust balance of pool water to the following:  pH 7.0-7.4, total alkalinity 125-150ppm ( or 80-150ppm for pools equipped with a chlorine generator), calcium hardness less than 400ppm  2. Adjust chlorine or bromine residual to