Hello, So I've been drilling my 4ft recently to plumb in a sump I got, I guess the main issue is I didn't want an overflow box in the tank, I was planning to do like durso stand pipes with shrimp guards on them, how many holes will I have to drill to not need an overflow box? So far I have one 1" hole at water level with a bulk head, and thought just draining without a siphon it would take around 1500lph, but things haven't worked out like that. Ive been looking at the bean animal