Do you have a swimming pool at your home? Are you still bothered about treating sewage? 

Filter ball is the best filter material for swimming pool water treatment. 700 grams filter balls is equivalent to 25 kilograms quarz sand. It's filtration accuracy is very high, more than 3-5microns, it is 3 to 5 times that of quarz sand. It is generally used for pool water treatment, 30 to 40 square meters of swimming pool with a small bag is enough. So you can buy it to have a try. Lvyuan as one of top and early manufactures of water filter industry in China, our factory has more than 30 years production experience.  Having the largest fiber ball and comet fiber filter ball production line.  We have gained a global sales network reaching seven continents.