Eric~
Although most people prefer to drill their tanks it is not necessary. You will need to buy an overflow box though. Also a pump for the return to your tank.
The positive is that it has a autotop off built into it which is nice but not super hard to DIY.
What size is it? Is it worth 110 buck to you? For me it wouldn't be. I had a custom 60 gal sum/fuge made for me for 120 bucks delivered just for a point of reference. I still had to buy the overflow though.
HTH
Brent
[ November 14, 2001: Message edited by: Diatom ]