1000g filter ball instead of 36kg filter sand instead of filter sand and filter screen, lightweight, easy to handle and has faster filtration speed than traditional filter media. .Super Durability The filter ball has high dirt holding capacity and dust holding capacity, high water permeability, lighter and more efficient filtration. .Material specification The material is polyethylene, diameter 50-60mm, white, can be machine washed, will not clump, environmentally friendly, recyclable and can be reused. .Cleaning capacity The filter ball can filter even the finest 1 micron dirt particles, as well as grease, debris and dirt in the water, making the pool water clearer. .Field of application Indoor and outdoor swimming pools, filter pumps, aquariums, large water tanks, etc. Lighter, more efficient, excellent filtration and environmental performance. .