internal Overflow box size

[mcmillion050804]

Does size matter? Can one be too big? I have a 38 X 18 X10 frag tank that is not drilled that I am going to drill and put a overflow box in. It is all acrylic. The overflow box and the tank. Also we are drilling the back but where on the back do u drill? close to the water level, close to the bottom of the overflow box or in the middle? TIA for the help!

 

[Anthony Calfo]

The longer (think horizontal not vertical) the better IMO for capturing concentrated water and improving downstream skimmer performance.