Summit CLEAR-WATER CALCIUM/MONTMORILLONITE POND CLAY - 1lb.

Summit's Clear-Water® Calcium Montmorillonite Pond Clay should be used regularly to help keep your pond crystal clear. Clear-Water® Pond Clay is a natural flocculant that attracts minute waste particles in the water that are too small for most filter systems to remove. The clay binds with them to make larger particles that sink to the pond bottom and are removed by the filter system.