Well that sure is a flurry of input??I can??t say how much I appreciate the energy to be thorough. Makes me hungry for some strange reason?..think I??ll have me a can o?? dat 660nm Albacore. Anybody know the wavelength of cold beer?

It seems like good scientific experiments changing only one variable are so plentiful that the possibility of completing them in a lifetime isn??t even imaginable??.especially starting so late. The first goal is to gather enough information for a successful first grow. The trick will be to keep the imagination in check.

The screen's certainly gonna set the upper limit, unless you're counting horizontal growth along it. Maybe (again) I'm missing something. I mean, your plants will grow as high as the screen, right?....is this a trick question?
Hermie, I guess that from the blogs that I??ve read and the accompanying pictures, I??d imagined that the veg part of the scrog happened for the large part under the screen and the flower portion happened through and above the screen.
I know that my height request is unanswerable due to so many variables, and that the ultimate height is something to which I can assert control, here I??m just looking for ballparks. My lower back tells me to bring it up off the floor. The ceiling is 7??6? so I can only guess that there will be room to play.

Jes' be careful what else (gnat eggs, mold spores, underweight grounghogs, etc.) your intake is pulling into your grow. Filtration may be wise. A closed system may be wiser, if you can manage it.
The possibility of problems of pulling air from below has occurred to me. It??s been bone dry as long as I??ve been here. I did screen with window screen. I had only planned on opening it as little as necessary. How fine a filter would you think?

Oldmac's suggestion above is not to be discounted. I wouldn't worry too much about not being able to sweep the entire length of the grow as the good rails have a timer for how long your lights dwell at the end of each pass. A huge advantage to this scheme which I forgot to mention is: less lights = less heat, less $$, less electrical usage.
The idea of a mover has been abandoned?..for now??as I haven??t found one to fit the application and ordered three light to accommodate. The energy and heat I hope to manage by my selection of LED-HID-LED. It??s all guesswork for me as I have no experience??.wish me luck!

Bazillions I tells ya.
Let??s hope not. In Zimbabwe there are a whole lot of very poor Bazillionaires.

Another topic that has begun to interest me is harvesting and it??s timing. My neighbor will soon be getting her patient status and isn??t fond of one hit couchlock, and will be seeking custom pharmaceuticals. I??ll definitely be harvesting (it??s indica) in increments to try to accommodate individual preferences. Any personal knowledge of harvesting in stages and the results would add to the knowledge base.

WeeZard, Glad you??re back??.after that totally insensitive crack I made about Hawaiians, I thought that you might have taken it personally??Ya big lug!

Headshake?..thanks, Welcome.

Gotta go??gotta work on the porch??The contractor turned out to be a homophobe and refused to build for the village people. Whodaf??inthunkit!

Horsemanthinks.