Filter socks stay hidden out of the way in the sump, but they are a boon for clear aquarium water. These 300 micron filter bags are designed for the Eshopps sumps & refugiums and provide excellent mechanical filtration, which helps reduce the amount of ammonia-producing organic matter in your aquarium. They also help prevent larger objects such as sand, crabs, and snails from damaging pump motors. Add these Eshopps filter socks effortlessly to any existing sump.
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