Overflow drain size

[LoJack]

It will be a 150 Gallon tank with 150 Gallon sump.

Return pump is a Reeflo Dart. (about 8 feet of head loss) Approx 2200 GPH

I'm using the Bean animal concept (3 drains ... 2 in use, 1 as emergency back up)

Will I need 2" Diameter bulkheads and pipe ? or ...

Will 1.5" be big enough?

Thanks

 

[LoJack]

bump ...

 

[Plumbcrazy]

1 1/2 will be pleanty big enough for the bean animal do to the way it works. I have that overflow on a 40breeder and love it dead silent!

 

[aleonn]

1.5" bulkheads would be more than enough. I'm not familiar with the Bean Animal overflow design (I've used Durso and Herbie designs), but 2" bulkheads take a lot more space and would be too much flow IMO.

 

[InDashMP3]

LoJack,

What did you end up going with? I'm going to be doing a 150 build with coast to coasts overflow/BeanAnimal. Trying to decide if 1.5 or 1.0 is going to work for me. Also, how for below the top trim did you drill the holes for the bulkheads?