Protech 027013P12 Defoamer, 1-Quart Fast acting - quickly eliminates foam in pools & spas No need to alter pool chemistry -effective over a wide pH range Long lasting - excellent stability in pool and spas Easily dispersed when added to a body of water Fast acting - quickly eliminates foam in pools & spas Long lasting - excellent stability in pool and spas Easily dispersed when added to a body of water