Am I the only one who is wondering how/why someone with such basic questions is setting up such a large grow space? We are talking tens of thousands in space, lights, a/c, dehu, tables, pumps, tanks, ro, etc, etc, etc.???
I'm not criticizing (well, maybe being judgmental - but this is the internet and I'm bored), but I would never consider that kind of project if I didn't already know every last thing about how to accomplish it.......
Just musing.... Nothin personal. And no, I don't know shit about a project this size. Carry on.