Originally Posted by dmolavi
Here's my plan on the drain and overflow box:
Should I make the box longer? Also, one or two return lines?
Are you DIY'ing your overflow box?
Any reason you have three huge overflow holes?
If I were you I would get one from glass-holes.com - even comes with the template and drilling guide and bulkheads.
This one would work: http://www.glass-holes.com/700-gph-O...t-gh700kit.htm
I don't think you're gonna need overflow holes that big or that many. I'm going with two 1.5" bulkheads for my 75G.
I think you could get away with that overflow kit and one drain line. I'd go one overflow and use 1.5" PVC
. Should be plenty.
As for the number of returns I think it's up to you, I'm splitting mine up the return line and doing two.