CuLator Metal Eliminator and Stain Preventer for Pools & Spas--3 Month Supply
CuLator Metal Eliminator and Stain Preventer, rapidly removes copper, manganese, and iron, from pool and spa water.  CuLator is nontoxic and works in fresh and saltwater.  Simply place a pre-measured flow-through PowerPak in the skimmer. As water passes over, metals are trapped inside.  After use, toss the biodegradable PowerPak away!