Each light is about 300watts, it may do 4x4 primary and if not I'm prepared to throw supplemental T5s at it...driven to VHO levels.
I've been experimenting with LEDs for awhile and even been using 2 Procyon's in my mom room for last 6 months. These lights by Theoreme Innovation are in use commercially in Canada, and I'm hoping I can trust our northern neighbors, ah.

BTW if all else fails, I'll through 600wHPS or more per tray at it!

I am shooting to alternate between the trays, hence the clonning ability to get a tray full up and running. To me it is a continuous grow because trimmings from one tray provide cuttings to propagate for next tray. Better then what I have now, keeping at least 6 mature moms per strain I want to run, plus up and commers. Not to mention trying to find space to grow out stuff for the spring for the little greenhouse...twenty pounds of plant material crammed into a ten pound bag.hehe

The new system, is also going into a new space, with room to work. About 5 years ago I was doing a NFT sytem much the same as this new one, except I was growing larger multi-stem plants.
I intend to hold finish heights less then 24" and see no reason why I can't hit 7-8 grams per site, as I do now in RW. And I am hoping to do it faster, but we'll see.
oldmac Reviewed by oldmac on . SOG technique; spacing I am in the process of building a new hydro set-up using fogponics, both dry fog and wet fog. It will be a SOG, fog to waste and I am using 2- 4'x4' trays. In laying out the lids, I was shooting for 4" stem to stem spacing using 2" net pots. I picked 4" spacing because that is what I use now with 4" rockwool blocks. What I'm finding is max number sites gives me 3 3/4" spacing or use less sites but spacing is at 4 1/2" apart. Which would be better, or what do you believe to be the best Rating: 5