How would you plumb a 220g dual overflow?

[Jrco226]

Hey everyone, I have a 220g reef ready tank with dual corner overflows. Each overflow has two 1" holes. Just curious how each of you would plum it. Include pictures/examples if you have done the same please. I would like to avoid having return lines over the back of the tank.

 

[jelazar]

I would remove the overflows and plug them with bulkheads. Then I would drill the back of the tank for a low-profile overflow like the Synergy Shadow.

 

[sbash]

I am a big fan of bottom overflows. I have used them in the past, and would use them again. The bottom being plumbed is a huge advantage with tanks this size, as you can put them right up against the wall (to help weight distribution). I drilled mine on one end, but if it was not an in-wall (through wall), I would have gone with the corner-flo tank...

Depending how many return pumps you are going to use, I would do either:

With a single return pump, put in three drain lines (look up BeanAnimal overflow). One would be a full siphon, another would be a durso-style standpipe and the third an emergency (99% of the time it will be dry).

OR

With two return pumps, put in a full siphon and a durso-style (look up Durso and Herbie overflows). You can do one in each corner, or put the overflow in one corner and the return in the other. I would put one in each corner to maximize surface skimming.... but it could be easier to plumb the latter (depending on your sump)...