HydroSponge filters are perfect for aquarium and small tank filtration. They are capable of moving more water than other sponge filters, are self-weighting and act as mechanical and biological filters. Simply attach to aquarium air line tubing, supply .05 cfm and filtering begins. For higher filtration rates, a powerhead pump may be attached. Stacking doubles filtering capacity. Easy to clean. 1” diameter tube. Overall height may be shortened by cutting tube.
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