"No" Overflow, possible?

[baker_jeff]

I drilled 3 holes in the top/rear wall of my tank. 1 for return, and 2 for drain. I was going to put an overflow box around them to leave the bottom of the tank open, but now I'm thinking, is this even necessary? Or can I just let the water drain directly into the bulkheads?

I can't see how this would be a problem, and it would sure save a ton of space and work.

Please enlighten to me if you see a problem .

Thanks,

Jeff