[moocow]

I'm trying to decide if I really want to risk my 58 gallon oceanic tank.
It wasn't originally drilled for saltwater. I'm converting it from a freshwater setup.
So the tank is empty.
I would like to drill it, that seems waaay easier, and cheaper.
But I terrified to crack the glass. I've called shops around my area and a few will do it, but they all use drill presses??

Is there any reason I SHOULD NOT get a siphon based overflow?
Over a DRILLED in tank overflow?
Or are they both pretty reliable?
please any comments or experiences are welcome.
I'm really having a hard time with this.
thanks
-matt