Felt Fine Polish Filter Sock - 100 Micron

Designed by Red Sea as a replacement for their Reefer Series Aquariums, the Felt Fine Polish Filter Sock helps remove uneaten food, debris, organic waste, or other fine particles. This 100 Micron filter sock is ideal for aquariums which already have a low amount of particulates, and will work to efficiently polish the water to be crystal clear! At 4" in diameter this reusable filter bag is a great addition to existing mechanical filtration in any saltwater or freshwater sump system. Eliminate organic matter which produces ammonia and nitrates, and maintain a healthier aquatic environment with the use of filter bags in your set-up! 4" dia. x 10" L