I have the same tank and drilled it a couple of weeks ago, no problem, but I drilled a side pane, not the bottom
The back definitely ain't. I drilled it no problem.
Am I missing something here, is it back or side ?
Back-side
Front and sides are one piece curved corners.
Arn't the font / sides in this kind of tank acrylic?
I would just drill the back pane ..........