Ahhhh I see. Pretty cool set up.
I talked to the guy and this is a wholesale shop that basically supplies all the aquarium stores in the city with their tanks and we had a 20 minute conversation about what I wanted to do and we ended up settling on an 18" overflow box centered on the back with two seperate 2" drains. I'll likely only be using one with my current setup but he said he'd drill the other for free and that the tank could essentially be setup and plumbed to turn over the tank 30x an hour through this drain and the return holes which will be 1/2" holes cut evenly along the back as high as he can drill them and evenly spaced.
It'd be cool to get a pump that did 30x165=4950gph and have absolutely zero hardware in the tank. It'd all be in the sump, I wouldnt even need powerheads in the tank. I could just get those bendable spray arms for the returns and direct them wherever Id like.
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