Albert has some great advice. The one point I might challenge him on is his recommendation for 1.5" holes for the overflows. Standard schedule-40 1" bulkheads require a 1.75" hole, IIRC. I'm pretty sure I've never seen a 1" bulkhead that would fit in a 1.5" hole. Schedule-80 bulkheads exist too and they require an even bigger hole. Unless he's thinking of smaller bulkheads?
I have a 1.75" drill bit for glass that you could borrow if you wanted. Drilling glass isn't too bad, I've done it many many times. I could help you out if you wanted.
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-- Tony
My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills. Whee!
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