OK I got my 60mm Diamond hole saw from eBay.
Unplugged everything, took the canopy off.
Drain the half the water out.
Marked for the bulkhead.
I am set to drill!
Well it looks like that glass was TEMPERED.
What a mess!
I found out after the fact that there is a way to tell if the glass is tempered or not by using a pair of polarized sun glasses. You can get em cheap at like walmart or whatever, Anyways when you look at tempered glass through them on an angle you will be able to see a diamond pattern. If the glass is not tempered you will see no pattern.