
3 month update: This filter does not work. The noise and vibration levels it produced were pretty bad. My crabs hid and my fish went mad blaming the noise/vibration this filter creates in the tank. It filters water quickly, but I wouldn't recommend it. Small size in the tank. This is a big plus. You can alter and add your own biological substances. The noise level is low, but it produces sound. Low hum. No flow adjustments, just the directional control is a little disappointing.

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