My 4 x 6 bud room averages about 580 watts of light, and it can fit as many as 11 10-gallon containers, but I usually only have 9-10 plants, of various sizes, in at a time. I'm usually using about 4.5-7 gallons per plant in hard pots, although soon I'm switching to 7-10 gallons in custom smartpots.
Each plant in my flowering room receives between 55-110 watts of light, depending on location and size of plant. My mainliner is taking up a ton of space and gets over 100 watts, although if she yields anything near 100 grams I wont be complaining. This plant CW is getting about 75 watts all the time, although she was getting less for the first few weeks ~55 watts, more for the past week and next 2.5 weeks ~85, and I will finish her out at 65 watts. I'm constantly toying with how little wattage I can get away with at what time. I find it stimulating, and I look forward to new ideas every day.
Compared to t-5's, cfl's, and fluorescent lighting I would rate leds highly. Although I feel the led industry is currently hampered by cost, customizability, diode size, and reflectors. The one thing I have never is why no led maker designed lights that could directly replace hids. When I first invested into them I assumed that it would be only a matter of months before they were trying to build direct HID replacement, and now 3 years later we are getting close. If I was going for pure yield I could give a better comparison, but I don't think that would be fair. The led's would blow CFLs out of the water.
I assume that some day we will have 300 watt led lights that completely compete with 600 watt HIDs; with 8-20w 3000k, 4-20w 5000k, 12-5w 660reds, a nice 300 watt led light hanging above a 3x3, with 10w of small cascading 6500k led strip lighting running half way through the fruiting zone to mimic light coming in from the movement of the forest canopy. All of this running through a computer program altering the color temperature throughout the day by dimming certain spectra at certain times. Pair this with a high yielding strain and I would assume you could grow monsters, but alas I don't have the funds to build the dream. Maybe next year
Thanks for stopping in AndrewDeeKing, it's about to get all update city on this thread!
Outdoor SDTW X GDP, CW is at day 40, and I'm throwing in a few pictures of the new cages I'm making along with some full room shots. Damn it's been a long night, I had to water flowering too. Updates tomorrow, I'm going to sleep.
Keep it real,
ILovePlants