Need help with bulk head placement

[Imhotep75]

Hey guys and gals Im in need of some help deciding on where to put my bulk heads I have a 120 gal tank 48x24x24 it's all glass. I have 4 bulk heads 3 for bean animal and 1 for return but I was test fitting the internal box that I ordered and if I put it at the top I won't be able to put the lid on it plus i have to lower it some cause of the top of the tank on the out side or I won't be able to screw the bulk head together. I just don't want to mess it up I'm not super handy but this looks really easy my concern is having the overflow to low any ideas on how far down it should be? Thanks form your help

 

[CuzzA]

The top of the overflow should be no less than the bottom of the exterior trim. This will insure you don't see the water line.

 

[ca1ore]

If the overflow is toothless, then I always align the top with the bottom edge of my trim. If it is toothed, I always align the middle of the slots with the bottom of the trim.

 

[thejuggernaut]

If the overflow is toothless, then I always align the top with the bottom edge of my trim. If it is toothed, I always align the middle of the slots with the bottom of the trim.

Yep, and if worse comes to worse, if you can see the water line when the thing is running, then just get a larger pump, and the water line will rise. Last resort of course.

 

[Imhotep75]

It has teeth it almost the biggest one brs sells and it has a lid that fits inside it and you can only drill once lol