Overflow box and plumbing help

[wings4wheels]

Ok, i am building a tank in-wall, and have it moved into place. I need to silicone the overflow boxes into place and need to get some advice.

Based on the setup, how would you do it? My Thought was to have 2 normal drains and one emergency drain. Return will be plumbed over the top of the tank.

I also am not sure of the configuration of the overflow box and the plumbing on either side of the bulkhead.

Thanks in advance.

 

[Mastiffsrule]

Evening

looks like a great build. If you are setting up 3 individual skimmer boxes, I’m not sure how to manage water levels. My thought would be a coast to coast as best set up. I’m sure there are other options out there though

@Peace River