Overflow / circulation design for 1,200 gallon

coreytrv

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Looking to start new tank project. This will take up an entire wall inside a home for custom reef / fish tank.

8' wide x 3' deep x 6'-8" tall. EST 1,200 gallons

Does anyone know how to properly size the overflow box?

Reversing into the design using PVC gravity flow rates:
1733342928034.png


2 x 2-1/2" drains = 6,400 GPH

Questions:

1. Is 5.3x turnover OK for overflow?
2. What size box is needed to accommodate 6,400 GPH flow rate?
3. Circulation via closed loop bulkheads on each side of the tank + gyre style pumps up top, enough points of circulation for tank of this size?

1733342832483.png
 

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