Commercial Air Pump 634GPH, 25W, 40L/min 6 Outlet for Aquarium and Hydroponic Systems

Worked less than 10 mins

I run this air pump 24/7 It puts out volumes of air. I run 4 air stones off each one. I did have one prematurely stop working but Viviosun is very good with customer service and send me a replacement immediately. I would have rated it lower for quitting a few months after purchase, but since the replacement has been going non stop for much longer, I have them 5 stars for the excellent customer service

one year after buying still work perfectly !!

Doesn't seem any more powerful than my 6-watt air pump. I'm not sure if it's actually the pump or just old air stones on my sponge filters, I will know better next time I clean the filters. As for sound and vibration I don't understand all the reviews about it being as loud as a dishwasher, mine is very silent. I'll have to do another review after I change out my air stones. I have to post a correction after the second day of using this pump, The air produced as of the second day is increased quite a bit.

Great product does exactly what it's supposed to Fantastic only having one pump. the reason only four stars instead of five is the intake is exceptionally loud I did manage to make a muffler out of tubing and cotton I just wish they would mention it or maybe sell something with it.

Very powerful pump .