If I were building my flower room again, I'd go with a 600 watt lamps for sure.
The cost difference would more than be made up by the gains in yield.
600 watt lamps, and plant in 5 gallon pots. Matter of fact, maybe I'll upgrade this
weekend. I know I could hit 4oz per plant with 600's. I can give a real-world
cost analysis and comparison if I go for it. Could yield some wonderful data.