Worked great until the pump stopped working - it lasted a little under two weeks. I just walked in one day and it wasn't making any noise so I checked it out and it just died. I connected the pump to the air stone. I installed it on the floor (under the 10g tank) so I used a check valve and made a loop on the hose. My fish seem fine with filter circulation only, so I haven't had to replace the pump yet. As for the noise, it was pretty quiet. If I was in the room I would definitely hear the hum, but if I was in the hallway or living room with the door open I could barely hear it. I may have just gotten a bad car so for the price I'd say give it a try and see. That's half the price of what you buy at Walmart. So try?
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