Keeping your fish healthy is what you have to pay attention to. But do you know how to keep your fish healthy? Not only the food you feed but also the water they touch. Thus you should use aquarium filter bag to help you keep the water clean. This filter bag provides exceptional mechanical filtration as it can effectively trap unhealthy particulate matter. What&acute;s more￡? it can provide beneficial biological filtration by culturing and maintaining helpful bacterial colonies. Choose this filter bag for giving you a clean￡? easy-maintenance aquarium.                                    Features            It can absorb all dirty substances￡? solids and soft particles effectivelyEasy to use and featuring strong corrosion resistanceWith a large space to increase the liquidity of the filtrateMaded of Polypropylene￡?it has long time to useEffective and reliable                                                            Specifications            Condition    New    <br>Dimensions    14 x 4" / 35.5 x 10.4 cm (H x Dia.)    <br>Material    Polyester Felt    <br>Micron Rating    100    <br>Style    Plastic Ring    <br>Ring Material    Polypropylene    <br>Weight    2.01 oz / 57 g    <br>Color    White    <br>                                                            Package Includes            1 x 4 x 14 Sump Pre Filter Sock 100 Micron Felt Bag FSI