Lo-Chlor KnockdownDescription The Lo Chlor Knockdown is a highly effective liquid flocculent that will force contaminants that cause cloudy water to drop to the bottom of the pool for easy vacuuming. Debris that is normally unfilterable can be eliminated overnight using this product. This product will efficiently clarify pool water in a short period of time. The liquid flocculent can be used with all types of sanitizers, and is effective over a wide variety of pH