Dual Autoflowering/Photoperiod Scrog Box

Howdy, y'all,

This is my first post and my second grow. My initial plan was just to have a fully autoflowering box so I could be lazy, but that seemed silly after I read all about scrogging.

My plan is to put eight (8) 3.75" netted pots into a DWC tupperware resevoir in a box approximately 4.5' wide, 2.5' deep, and 5.5' tall. The front face will feature double doors and all other walls will have a screen for scrogging ~1.5" from the wall. All of the surfaces in the box will be mylar coated, obviously. I will be using a bank of CFLs with a total output of ~27,000 lumens.

The pots will be arranged in a 2x4 array:

X X X X = A B B A
X X X X C D D C
Doors Doors

where plants A are photoperiod plants (height not terribly important), plants B are short autoflowering (max height ~1.5'), plants C are tall autoflowering (max height ~3'), and plants D are medium height autoflowering (max height ~2'). The light bank will sit mainly over the shortest plants with some over the medium height plants at a safe distance from the scrog screen ( ~6")

The goal is to have the photoperiod based plants veg while the autoflowering variety do there thing on a 20/4 schedule. Once the autoflowering are harvested, or the photoperiod is large enough, we'll switch to a 12/12. Then we can throw a new batch of autoflowering plants in to grow on that 12/12 cycle. The autoflowering won't produce as large a yield on the 12/12 cycle, but I'd rather not have empty pots.

The photoperiod plants will be topped to produce 4 colas using uncle ben's topping tech to slow them down during their 2 month veg. If necessary they'll be topped a second time.

This is the basic plan, but if there are any inherent flaws in it, please let me know.

What I'm really wondering about are these things:

1) Can I extend my screen to the ceiling and scrog over that too?

2) What sort of nute mix should I use since I will have plants vegging and flowering simultaneously?

Any input would be greatly appreciated! Thanks.

- Sooth and Tac
 
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