AQUANEAT Powerful Aquarium Air Pump, 250GPH, 10W, Dual Outlets, for up to 300 Gallon Fish Tank, Super Quiet Oxygen Aerator with Gang Valves, Adjustable Hydroponic Air Bubbler Pump

I only does this pump put out plenty of air, it is also very quiet. I have to look into my tanks to make sure there's air coming out. Damn this thing's quiet

I was looking for a higher watts pump to carry several tanks on a rack, which adds to roughly 55 - 60 gallons in total. Tried some other pump that was advertised as "quiet" but still as loud as a typical 1 outlet pump that's very loud.When I got this one, I am literally making a "wow". The noise level is very low at a useable pumping rate. The designed knob could reduce it to zero, a full stop, which is why the tuning can be more accurate than most others.That's all I need. That's what makes a pump outstanding. If there is something can be improved, it's the size. But if you own projectors, you know Epson makes the quietest projectors, which are also on the larger side compared to almost all competitors. It needs room to reduce the sound noise and I can live with it.This is probably the most inexpensive pump that has one of the lowest noise most people can find. I spent quite some time searching it and I finally selected this one. Hope your time can be saved if you are looking for the same quiet pump.

I haven’t found anything I don’t like. This air pump is amazing with high quality hardware. It is under my tank in the stand and is quiet. Supplies plenty of sir power for 4 tanks and is spliced for 5 lines so far. I had to turn it down! Do it would power probably 6 plus air stones and sponge filters at least!

If you are looking for a powerful air pump that is very quiet you found it. You will not be disappointed.

This works well for the 2 - 21" bubbles walls in my 54gal corner aquarium. However, it's marketed as "quiet". It is anything but no matter where I put it I can't seem to muffle the sound. I guess you can't get everything you want. The quieter ones I've tried don't have enough power for both bubble walls.

This is a fantastic air pump, and I have had many the brands. It took my 6 sponge filters from decent flow to amazing flow. It is insanely quiet as well, which is important with my shrimp rack being in my work from home office. Absolutely love this unit and thinking of replacing even my single tank setups with this one as it is way quieter then the less powerful dual units I have running, one for filter and one for airstone. Definitely takes up some space, but totally worth it.

I purchased this in December 2022. Very quiet and powerful.I love the ability to dial back the output electrically. In-line power control works very well. So far so good. I will definitely be purchasing one for all my aquariums!

I use this pump for two Aerogarden Farm 24's, which is 8 airstones total. Gives plenty of air to both. Small issue is I'm missing a cap to one of the provided diverters. Unit is very quiet as well!