Plumbing a sump with HOB overflow

[StradicCi4]

Hey I am looking at plumbing in my own HOB overflow, I have all the parts and things from a previous build. I have a stand, with a MDF board on the back, I know these stands are pretty reliant on that backboard for rigidity is there any structural concern if I punch a 4" hole in the back of it?

 

[mfinn]

Didn't say what size or how wide/tall it ( stand back wall) but I would be pretty sure it will be ok.

 

[StradicCi4]

its a 75g - not sure the size, am 250 miles from the tank right now, but yeah its large ish

 

[mfinn]

its a 75g - not sure the size, am 250 miles from the tank right now, but yeah its large ish

A 4" hole will be fine.