I just picked up a 125 gallon glass tank to use for a basement sump. DT is on the first floor. I got the tank home and saw that it was tempered glass. I know you can’t drill it so I was hoping for some advice for a return pump. I planned on doing a large external pump but now that I can’t drill I don’t know if there are submersibles strong enough? Or if I ran the external pumps pvc over the side I know it would have priming issues in a power interruption. Help! The return will probably go up about 6 ft in the basement, 90 degree then 12 linear feet. Then up another 3 feet to tee off to the returns on the DT. Then up about 4 ft to the top of the tank.