Go with an official intake and exhaust setup. Trust me, it will help with the heat issues. You dont want the box getting hotter than 85 and no cooler than 65. I run a 400w hps in a L2.5' x W5.5' x H6' closet area for flowering. The upper portion of the closet is fluros. Both areas are set up with intake and exhaust. The top portion is about 78 to 81 all the time with 24/0 for veg. The flowering box is on 12/12. the temp gauge below the light even with the plant canopy never gets more than 84 degrees and the ambient air temp of the closet is about 75 with a dark time temp of 65. They seem to love this so far.yeah im definitely planning on beefing up the light alot for the flowering period, i have 7 seeds in soil right now and however many females i get ill try to get 3 bulbs per plant, but i dont even have enough space for all the CFL's to grow 2-3 plants. I have one good sized fan hanging from the very top of the box its in a low setting 24/7, would that be enough or am I gonna need an official intake and exhaust?
As others have already indicated, I think your 3 lights per plant will be adequate - keep them close without touching. air intake is important and if you can also set up an oscillating fan in there so much the better. Painting the inside white is a good idea.
As for light cycle, 24/0 | 20/4 | 18/6 are all great for vegetative
do not switch to 12/12 until you are ready to start flowering. Speaking of flowering, since you using CFLs to flower you don't want to stay in veg too long since CFLs don't have the light penetration to bud tall plants - but short ones should bud up just fine!
So far so good, make sure to keep the lights close to avoid any stretching, watch your water and feeding, get some ventilation going and you should end up with a respectable product![]()
i meant the kind that moves back and forth (oscillates) - the intake and exhaust would be different. You can usually get away without having an intake fan provided you still have an intake hole and an exhaust fan.by oscillating fan, do you mean and intake/exhaust system? also i was planning on flowering the plants at around 18-20 days from sprout![]()
THe PC fans are 12VDC (even the ons in the powersupply)thanks a lot guys, I'll work on copping a few old cell phone chargers.I've got tons of junk computers lying around so i don't think the fan should be a problem.![]()
3/22:the temp was down to 79F when i checked on them this morning. Hopefully it will stay at that temp.thanks alot! I'll see what i can do, i don't want to use too much electricity, I'm running the whole thing off a extension cord running from a regular outlet.
..But most importantly does anyone know if full spectrum 5100k would be good enough for veg?