Also known as alum, this product is used as a flocculant which attracts suspended particles in the water together (green or cloudy pools). Alum sinks everything to the bottom, which is then vacumned to waste. A small amount of alum can also be used as a sand filter additive.
Also known as Alum. This product is used as a flocculant which attracts suspended particles in the water to each other. Alum sinks everything to the bottom, which can then vacuumed to waste. A small amount of alum can also be used as a sand filter additive.