odd ball bulkhead

[bkvistad9]

I picked up a 120 gallon (48x24x24) with dual corner overflows. Going to be setting up for my first reef tank. In the center of the tank there is a bulk head with two small plastic lines coming out the top of it. About 1/4 o.d and three feet long.They have plugged the bottom side. Any help would be appreciated. Thanks

[Longinus]

Pictures help But I am guessing that the ones in the corner are for overflows and the one in the middle are for a return pump. Check if the two little tubes have a bunch of small holes in them, I imagine they could be spray bars.

[bkvistad9]

I am having some trouble getting a picture to load up. They don't have any holes on them that I see. I'll get on my computer later and see if I can upload from there.