Jack's Magic The Copper & Scale Stuff is a slow No-Drain acid wash treatment for all pool surfaces and types. For the most effective and powerful treatment, use with 1/2 gallon muriatic acid or 1 lb pH decreaser per 10,000 gallons of water and 12 ounces of Jack's Magic Blue Stuff, Magenta Stuff, Pink Stuff, or Purple Stuff. Saves time and money without having to acid wash and drain your pool!
Be Advised: Due to low pH levels of water during treatment, swimming is not recommended for people or pets.
Use as directed for water balance and successful stain removal.