Sup Adam, setting up some reef tanks now? Still doing freshwater rays? I really want to get some but i got a kid on the way.
What are you drilling anyway? I've drilled a bunch of tanks using a dremel and a tile cutting bit. It's super easy you just need to run cold water on where you are cutting and go slow. The tile cutting bits are like 10 bucks. I just drilled a 125 that way last month with no problem.
If nothing else get a hold of tinytool, ill bet he'll do it for ya.
Good luck!