STAIN SOLUTION #2) is designed to safely and effectively remove copper stains and scale from all types of pool surfaces without draining the pool. In most cases, The Copper & Scale Stuff is more effective than acid washing the pool, and will save both time and money.
Please Note: must bypass heater when using this product.
DOSAGES 10 pounds per 10,000 gallons
NOTE: The use of a sequestrant is required to filter out the stain.