HKM-779475 Mute Filter Ball with Internal Cotton - Multiple Sizes Available (1.6cm - 7.6cm)Introducing the HKM 779475 Mute Filter Ball with Internal Cotton, a reliable and essential addition to your filtration needs. Engineered by biosphere, this product combines sturdy plastic construction with internal filter cotton to facilitate effective filtration across a variety of applications. What makes the HKM 779475 stand out is its innovative built in screen grid, which expertly manages light and water flow, enhancing the performance of your