Pool filter ball, 1300g filter ball can replace 45kg of filter sand, reusable, + 2 pieces of pH test paper

【HIGH-QUALITY MATERIAL】WEVOL pool filter balls are made of polyester fibers, which are harmless and environmentally friendly. A 1300g pool filter ball can replace 48kg of filter sand. Compared to traditional sand filtration, filter balls are much lighter and also save time when filling the filtration system.【FILTER BALL WITH EXCELLENT FILTRATION】The diameter of the filter ball is approximately 5cm. With high elasticity and strong adsorption capacity, pool filter balls can effectively filter fine suspended particles and improve water quality. No more sand or dirt in the pool!【WASHABLE & REUSABLE】Our pool filter balls have low wear and are very durable. Pool filter balls are also machine washable and reusable. (Comes with a mesh bag for easy cleaning.) 【EASY TO USE】Pool filter balls are easy to use. They are suitable for most sand filtration systems and are easy to replace. (Flocculation aids cannot be used simultaneously.) 【WIDE APPLICATION】These filter balls are suitable for swimming pools, sand filtration systems, filter pumps, aquariums, etc. An ideal replacement for filter sand! When not in use, the filter balls are easy to store and don't take up much space. Product Description: Excellent Filtration: The pool filter ball has high elasticity and a strong adsorption capacity, allowing it to effectively filter fine suspended particles and improve water quality. Ideal Replacement for Filter Sand: Made of polyester fibers, the filter balls are very lightweight. 1300g of pool filter balls can achieve the filtration effect of over 40 kilograms of filter sand. No more sand or dirt in the pool! Washable and Reusable: The filter balls are machine washable and reusable; the recommended washing temperature is below 50 degrees Celsius. (A mesh bag is included for easy cleaning.)