So, I have an 18x18x18 Exo Terra enclosure that I have set up for my frogs. I have a waterfall feature in the tank and didn't think about changing water when I built the tank. >_< I have a false bottom in the tank and I have a 10 gal tank I can use as temp housing for my frogs. My questions are, how does one safely drill glass? What materials are needed? (i.e, a low speed drill, bit types,) And how would you recommend I setup the "drain?"

I have seen that a lot of the new Exo Terra tanks already come with this feature. And I should have really thought about changing the water before I finished building the tank.

Thanks for any help! I am truly a knucklehead for not having the foresight to install a drain during the build.