LF Sump Pump

[Aquatek]

Originally Posted by intarsiabox

If you are looking at the pump to return water to your tank from a sump a needle wheel isn't what you want. Needle wheels are used to create lots of bubbles in skimmers you will want a regular centrifugal impeller design to push water.

A needle wheel is just another form of impeller. If there is no air then there is no bubbles. The only way you can create bubbles is with a venturi or your sump runs dry. I have used this style of pump in many of my tanks. You are correct that they get used in skimmers to chop the bubbles but work equally well as a pump to push water, they are just rated for less gph. Either way, I have a regular pump as well. Your choice. I'll bring both.