Sump Drain

Morning all,

Been lurking and enjoying this group for a couple months now (as long as
I've been in the hobby) and have learned alot! Thanks for all the info. I'm
switching my 24" X 16" X 18" ,37 Gal FOLR from crushed shell and gravel
substrate to sand this weekend and would like to drill a hole for a future
sump while it's empty. What would the minimum size be for the drain hole? I
would imagine it would depend on the sump size and return pump. I will
probably modify a 20 Gal. for the sump and could use help on what size of
pump to use too. Any feedback would be *greatly* appreciated as most of the
books at our library are really out dated and would like more that just the
word from the LF stores.

Thanks!

Glen G (GG)
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