Yup...not tempered...abortedsoul;2456002; said:60"x18"x24.5" and most certainly is 1/2" glass. The tank is a bit less than 125 gallons, according to the calculator.
I'd use a 1/2" bulkhead and PVC...
http://www.aquaticeco.com/subcategories/832/Low-Cost-Bulkheads
BKF1-$5.75
http://cgi.ebay.com/eBayISAPI.dll?ViewItem&item=350127311933
10.00 or so...