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Helps Keep Water Clear
200 micron material helps make your water look crystal clear and helps reduce nutrients by removing free-floating debris.
Catches snails, algae and other large debris before it can enter your sump and damage your pumps and other equipment.
Felt filter socks can be turned inside out, washed in bleach and used again. If using bleach be sure to soak the sock in water with dechlorinator after cleaning and allowing the sock to completely dry out before placing back into use on an aquarium.
4" x 8" - Fits any standard 4″ filter sock holders and sumps.