Petey, Thanks brotha! This is all done in a custom NFT/Drip hydro system that I made a few months back, see below. I'm only using 5" net pots which equate to less than a gallon. The roots grow into the trays and the nutrient solution is recirculated through the drippers, into the trays, and drain to the resevoir. I'm using a Magnumm XXXL refelector, 1000watt MH for veg, 1000watt HPS Solarmax for flower, I use a Lumatek digital ballast which is dimmable. I can set it on the 600watt setting with the MH when they are young and ramp it up to the 750/1000 watt settings as they get bigger.
This is the recipe I'm using minus the Purple Maxx-
http://www.igrowhydro.com/InfoSheets/Recipe-NutrientCalcChartSensiBloomZone.pdf
more soon!
Dub