Im trying to decide if I want to drill this or use what i'm familiar with, a hang on back overflow.
If I drill it, I'll have to make a lot of decisions, how big of hole, how many holes, gph
overflow boxes take the thought out of that for me, but aren't as "professional". The back of this tank will never be seen though.
Then I have to figure out if a spare 55 is enough for the sump or if i'll want to look around for a bare 125 or similar.