Review on Aquarium Silent Oxygen ZHHMl Silicone by Christine Allen

Picked up this little pump for a 1 gallon Triops tank we have. Produces a pretty good flow of bubbles; enough that I'm glad the filter I use it with comes with a valve to reduce it a bit. Could fit perfectly in a larger setup than mine. Not quiet, but very quiet. It has a 60-beat rumble like a regular air pump. But the hum is almost drowned out by the sound of the soap bubbles. Definitely quieter than a more traditional type of pump. I was expecting that it would have to be drowned out somehow, but that wasn't necessary. The suction cup held it to the side of the tank with no problem. A little surprised by that. In our room, this was a clear argument for not having to create extra space for the air pump. Overall I'm very happy with it. Definitely recommend it.