intank overflow location and size

[arju]

hi, need advise and help for my intank overflow location and size. plan to maximize space for live rock and fish able to swim front n back around the tank. tank will view from front. right and left(not so important view area).

plan using as below:-
jebao DCP8000,
bean animal for option 2 ( corner back overflow box)
tank 180g - 72x24x24.
overflow box 6x13 sufficient?

need advise is it option 2 the best for my needs. attached. thank you for help.

happy reefing all



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[hkgar]

I have a 180 tank that came bottom drilled with two corner overflow boxes (kind of round) and I think it works great. each side has a drain to sump and the return from sump.

 

[thegrun]

I would always use a coast to coast ghost overflow box whenever possible. You maximize the space inside the tank, provide less in the tank flow restriction and maximize the surface skimming. Either way I would use a 1” pipe as the primary full siphon drain, 1-1/4 for the emergency drains

 

[mcgyvr]

Option 1 plus making the box coast-coast or much wider is the "best" solution..

 

[JUNBUG361]

I’d go either 1 or 3

 

[arju]

thank you for advice. so opt for either option 1 and 3. unable to use external ghost c2c due to back space. only able to use intank overflow box. roughly what is the size for overflow box if go for option 1 or 3. thank you.


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[mcgyvr]

roughly what is the size for overflow box if go for option 1 or 3.

The longer the better..
The longer you make it the better the surface skimming capability..
With really small overflow boxes you can have protein slicks on the water that will not get sucked down the overflow..
That can be "addressed" with powerheads pointed at the surface to knock it down but to me that just increases evaporation and then you are using energy/flow there instead of keeping detritus in suspension/eliminating stagnant-dead spots in the rest of the tank..

I think at the very least I'd do 50% of the tank length but realize that longer is better..