Question about plumbing??

[tony_3a]

Hey guys i got a question! I recently picked up a used tank that was custom made(I believe it was out of aquatic addictions here in abbotsford). Anyways the question I have is, and maybe this is normal, but i have never seen it, the tank has 2 small corner overflows each drilled only once with 1 inch standpipes in it, and nothing else. Just 2 open pipes, I dont even think there is room to get a durso in there. Im just curious just because with 2 open pipes there I am thinking there will be a shitload of noise/gurgling.

I was thinking i could do like a dual herbie but the problem with that is I would have no emergency drain so that would be a problem if either of them got plugged.

Im just out if ideas.

Any help is appreciated.