Eshopps AEO19005 U-Tubes for Aquarium Water Pump, 1-1/4-Inch

I purchased this item to add added water flow to my overflow. I wanted to add a larger pump into my sump that would help cycle more water.

The U-Tube does not have venting tube to remove the access air and prime the system. So you have to use a rubber hose to accomplish this. I had a other u-tube that had a notch on the top and a tub sticking out of it that made it easy to prime and clear it.

I thought I would be crafty and make this hole my self and add a silicon tube on my own. Well the U-Tube cracked and now it's a big mess, I covered it with silicon and got it working.

Other than that it did work. If you do cut a hole don't use a drill that doesn't have a speed control, and turn your cell phone off too.