Rafstya 4 Packs of Filter Socks, 200 Micrometres, for Fish Tank/Saline Aquarium, Pond, for Sump/Overflow

HIGH QUALITY PROFESSIONAL GRADE: These filter socks are designed to be sturdy, strong, and heavy duty to be RE-USABLE and cleaned CRYSTAL CLEAR WATER: These 200 Micrometre felt filter socks trap smaller organic matter and debris that larger or mesh filter socks do not catch to provide crystal clear water EXCELLENT MECHANICAL FILTRATION: The use of filters socks IMPROVES WATER QUALITY by trapping debris, detritus, excess food, sand, coral and more REDUCES NOISE AND SPLASH in your aquarium/pond overflow sump system