Foam Free ™ quickly removes foam gathered on the surface of the water. The appearance of foam usually indicates the presence of an excess of protein in the water due to overfeeding and poor performance of the filter. Foam Free ™ does not remove the protein that causes the problem but it will remove the floating bubbles and foam quickly and safely. If foaming continues, it is necessary to investigate the cause. Divide the dose on the surface of the pond or where the filtered water flows into the pond..