I'm not sure about a 30 long having a tempered bottom ( aga can tell you) but you can drill the back.
Chuck at Aquarium Oddities in Greenville will do it for you. I don't have his # but his store is just off of I 85
AQUARIUM ODDITIES
613E North Main St.
Mauldin SC 29662
Hours:
Wed-Fri: 12-9
Sat: 1-9
Sun:1-6
Mon-Tues: Closed
Or you can do it your self.
I did mine.
OH BTW
We're trying to get a club started in the upstate area and would love to see you at some meetings.
We have a forum on another site
http://www.reefmonkey.com/phpbb2/viewforum.php?f=24
Mods, I hope that is OK...