Ok so my outdoor crop is about ready to harvest, and I'm scared im not going to have enough smoke to last me the year!! Actually I know im not going to have enough!!

Ok, so I decided to build a budget CFL box. Somewhere under 150$
I have power surges laying around the house and I have the tubwear containers as well.

I was wondering if this design will be effective for light and airflow.

Look's like a pretty good setup. What cfl's are you going to run?

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R.C.C (Rollitup CFL Crew) - Lieutenant General
http://www.rollitup.org/cfl-growing/...lant-cfls.html Feminized PPP

16 42 watt bulbs will be over kill. The pc fans would be most effective sucking out the top with passive intake from the bottom.

I have no idea. I was thinking about using the splitters but if I have two surges going im thinking about not using the splitters, filling in each socket with a 42w CFL for veg and then maybe bump it up to 65w for flower.

I have no idea to be honest as i've never grown inside let alone with CFL's.

Im open to suggestions

EDIT: I just read that 16 42w will be overkill, as I do agree.
I was thinking about using anywhere from 8-12 total.

I want to maximize my yeild, do you think putting CFL's on the sides of the boxes would be useful?

Note-2-self: Exhaust fan on TOP of box.

Your tub may be about 2 square foot. 5 42 watters will give you 210 watts. That should give you enough if you keep your plants small.

As with any "box" grow, cooling is the real issue. I am running 12x42w bulbs and 8x23w bulbs. No way would a couple of PC fans keep it in check. I have the central AC for the house ducted into the box with a pc fan and a 7" fan pulling out. I get to around 88* on a hot day. So AC with 2 fans, one pretty big and I am still getting temps of 88* on a hot day. Heat is the enemy, dont be shy with the fans. In my rubbermaid cloning box, I put one 10" fan in the side. Its huge but that box doesnt get over 75* on a hot day, granted it only has 4x23w CFLs. Move the air through that mutha.

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R.C.C (Rollitup CFL Crew)

I was under the impression CFL lights dont put out much heat?
My box is going to be in a cold closet that is dark all the time. Its probably around 70 degrees in the closet most of the time.

Ok so I think i decided on a total of 6 42 W CFL's on two surges. The reason im using two surges is because I want to spread out the light a little better because its about 20 inches wide and im going to have probably 3 plants in there.

Two exhaust fans up top and on the "intake", do I need one sucking air in or just an opening at the bottom.

They do put out alot of heat if you have a bunch of them and the higher wattage ones put out a little heat too.

__________________
R.C.C (Rollitup CFL Crew) - Lieutenant General
http://www.rollitup.org/cfl-growing/...lant-cfls.html Feminized PPP

I would have one sucking in air at the bottom and then make sure the exhaust is towards the top of the box.

__________________
R.C.C (Rollitup CFL Crew) - Lieutenant General
http://www.rollitup.org/cfl-growing/...lant-cfls.html Feminized PPP

Perfect, I plan to have it built within a week and i'll post up pictures.