Originally Posted by In.a.Box
Thanks for the head up. I was planning to make the hole smaller than the fitting for a tight fit. So a 3/4 hole with a 3/4 fitting would be fine?
Yes, I'd also suggest a flat soft(er) rubber gasket on the for the inside fitting vs. a round "O" ring. I ended up using silicone with the "O". In most video builds it really doesn't matter if there is slight leaking/dripping as the open sump tank tends to be directly under the Growbed.
In mine, there is a wood shelf that would eventually rot.