I was looking for a filter for a small aquarium. It's my fault for not realizing it was just an air pump. It has no filter/purification function. It says the tank size range is 1-20 gallons but it's too aggressive for my 2 gallon tank. I tied a knot in the air hose to lower it to what I think is a good level, but I'm not sure how long the motor will last. The rubber hose is very thin, which I think helps here. Sonically, the bubbles are louder than the engine.
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