40gL overflow what's best set up?

AForys

Member
Ok, I plan on buying a 40l from a member here. I want it do it right this time as I have a 40b with a hob overflow box. I want to drill it and do everything right this time. What's the best set up? Holes in rear? Bottom? Also what overflow box would yous recommend? 2x returns? Thanks for any input!
 
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