OsAtNb 4pcs inlet cover sponge for Aquarium Bio Filter Fish Tank Internal Turtle Waterfall Flow Water Clean Pump Filtration (4pcs sponge)

Note:Fits for OsAtNb 600L/H waterfall filter only filter waste and stop the waste go into power head Protect your filter power head and prevent small fish or animal suck in the filter. Absorbs odors and discoloration Replace or clean the filter inlet cover sponge every two weeks or sooner for optimal performance.