Quote Originally Posted by demoreal
I use a 400 watt hps above a 2x2 tray. you can check out my grow in my signature.
Ahh, so the cabinet is four feet tall. Okay, in that space, I'd recommend five 50w if you're gonna be growing them tall, use one in the center initially to veg your plants for a couple of weeks, drop another two on for another week of veg, then add two more, leave the center panel in place, make sure the other four panels are over the tops of the plants and flower. Grow that out hardcore, raise the four outer panels more than you would the center panel, the center panel providing from mid-to-undercanopy light for that extra yield.

You would drop to 250w, I'd bet on getting very close, if not over, the same yield, and you most certainly would not need as much ventilation for cooling, a little pc fan in the top of the box and a slightly smaller hole near the bottom for cooler air intake and you're set to go.

On the other hand, you could drop two 120w units in there, They are typically like 8.5"x16" so two of those side by side would blow your cabinet up.

I'm gonna drop you a PM with more details in a bit. I gotta get to my drafting supplies and draw out some ideas and see which might work out best for you if you do go the LED route. So many LED configurations. T8 style LED tubes, panels, spotlights, so many styles. Let's see what my engineering skills can pop out for ya.
khyberkitsune Reviewed by khyberkitsune on . Enough Light? Ive got a 4x2x2 grow box and was planning on using 6 18w CFL's for vegging and flowering would this be enough i think they would produce around 3,000 -4,000 lumens alltogether, i was only planning on growing 3-5 plants Rating: 5