How to select a water pump for water feature
I have a few indoor water features and not only does this pump work well, but I like the fact it has a flow valve. 


  Another concern I have is the noise. Since it will be indoors and the point of the feature is to provide ambient water noise, having a loud pump isn't ideal


Believe it or not but the water rate in which it flows is as important if not more so, because in silence, the wrong flow can make way too much noise.

It measures 2"x1.5"x1.5" with a 6' cord and is $13, with free 2 day shipping if you have Amazon Prime.

It can be seen and bought here. https://www.amazon.com/Aquascape-91023-Fountains-Waterfalls-Filters/dp/B002H5EU0W