Yes I'm sure he knows and these systems do work. They are pricey for the first buyer but once you see it and learn what you need to go with it. Then you see it can be made easy for cheap. Lights and meters and nutrients are where my bucks go. BUT, I had to learn by buying one drip system.

Everything you do kind of has to be tweaked to your setup.

All I can say about hydro is. ( Come on in Boy's the water is fine.)