Overflow and Flow

Jimboaf

We can build it
Ok, so I got a new tank and its 200 gal its a 72in x 24in x 28in. I am not sure how I should do the overflow and how much flow should be from the overflow box to the sump. I will be putting a 55gal sump on this tank as well. I am also looking at how diameter of pipe I should use. Thanks for the help.
 
Return should be 10 times the tank so I would go with 3000 to 3500 gph return pump this will allow for head loss. 2 return lines 1" and 2 drain lines 1 1/4". I have a 150 gal with a 2700 gph pump with 2-3/4" return lines and 2-1" drain lines mine is also a reef ready tank
 
I am actually looking at buying an internal overflow box but the one that I am looking at on bulkreef supply is only rated for 2400 GPH. Would that be enough flow? I was thinking about drilling three wholes for the overflow.
 
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