Purity Pool UAW Underwater Acid Wash Set — Continuous In-Water Acid Feed for Plaster Stain Removal

Designed to remove the same stains a traditional acid wash handles, this underwater system delivers acid from a bottle positioned above the water for a continuous feed. You can eliminate both small spots and large stains without draining your pool, cutting down on time, hassle and expense. The included soaker pad conforms fully to the plaster surface to ensure even contact while keeping impact on pool chemistry minimal. Model/ASIN: B00C7UGLFY.