HPA and AA can operate in 12" depth with the right nozzles, 6" roots wont pose much of an obstruction to the mist. Using large flat chambers for such...
Ahh perfect, so you know what you want and why. My system is easily turned to solar with just adding the panel, I really considered it at first, but...
I know this is old, but I'm just catching up... For what it's worth I have the same r.o. setup- but I found some clear tubing that slips snugly over...