Stone Pumice Block - 6 Oz 6"X1 1/2X1 1/2 (PB-80)

Pumice Block - 6 Oz 6"X1 1/2X1 1/2 (PB-80) Pumice stone is a tile and concrete cleaner. It removes lime, rust, stains and algae from ceramic tile, molded or pneumatic formed concrete surfaces. There is no need to drain your pool since the Pool Block floats! It is chemically neutral and won't upset pool pH balance or harm hard surfaces. The Pumice Stone cleans even where the strongest acid cleaners have failed.