Easy's CFL Grow Box journal in the
The Grow Room forums; Intro:
Grow Box area: 22.5" X 19.25" X 28"
Exhaust Fans: 111 CFM and 54 CFM
Intake fan: 111 CFM
looks pretty good. i think you should look at at least 100 actual watts of light per plant, no more than about 200-250 in that small box. if you increase light wattage, you may have to look at a passive intake so that the forced air intake doesnt swirl around a bunch of hot air before letting it exhaust. plus, when odor control comes into play the forced air intake will push the smell through all the tiny cracks that arent air tight, somewhat defeating the purpose of any carbon filters you may have. i assume with the 2 exhaust, your door probably gets pulled shut once you have it open about 1-2 inches. thats negative pressure, which is good. they actually say to have twice as much intake as you have exhaust. u have never tested or necessarily followed this, but its a general rule I read quite often.
Last edited by gumball; 09-25-2010 at 01:18 PM.
This is confusing to me. can you explain?
Originally Posted by gumball
I have two exhausts; 1 - 111 CFM fan and 1 - 65 CFM fan.
I only have one intake fan at 111 CFM.
Should I have the inverse?
oops, i menat to say "I never tested or necessarily followed this" sorry if that did the confusion.
basically you want one or the other (intake or exhaust). if you have exhaust, the force of the air it pulls through the intake causes the induction flow. i think you shouldnt have any intake fans, they are counter productive.
think of your home AC, it "recirculates" the air. it pulls from one side, cools the air (or heats in winter) inside the HVAC unit, then forces the air out your ducts into your living area for the HVAC to pull it back in ad do it all over again. your home AC does not pull air into the unit to cool with a fan and then blow it out with a seperate fan.
does that help make any sense? sorry for the U, i did mean ME!! LOL
Nice start, the vid and all. It makes it much eaiser for others to see whats going on. Yea, that looks cool. Good thing you ordered lowryders
As far as exhaust, IDK, I have a passive intake in my cab, 80 cfm exhaust for plants and 110 for the cool tube, seems to work fine. The only thing I would look at is humidity, 110 in and 110 out your not going to be able to control the environment in the box so you will need to do it in the room.
As far as wattage, I flowered six small plants with about 220 watts and they came out great in a cab not much bigger then you have. Sure not a lot of mass but loaded with trichs.
Anyway thats my 2 cents.
Originally Posted by cruzer101
Thanks Cruzer and Gumball. It sounds like I should take out my intake fan and I'll use two 110 CFL exhaust fans and leave one opening as a passive inflow?
Originally Posted by gumball
As far as lights, Can I get 4 60 Watt CFLs (approx 300 watt equiv) and with the adjustment to my air flow stated above, will that keep it at 80 ish degrees where it is now with two 13 watt (60 watt equiv) CFLs?
or am i phukd?
this is frustrating.
Whats up easy, I would do the two exhaust fans and one passive intake. That seems to be the most common for keeping temp under control, "as much as you can anyway.." As long as you can keep it under 90 you should be good.
Able To Roll A Joint
Able to roll a joint
i think u should get a fluorescent bulb with more watts
Yes, I will have the teo exhaust fans at 110 CFM and only one passive intake opening. You are right, it works substantially better. Thanks for stopping by SmellyTreez
Originally Posted by SmeLLyTreeZ
I am going to veg using 4 26W 5,200K CFLs plant using, then I will use two 40W 2,700K CFLS for flowering. To get more than that I will have to order the CFLs online.
Originally Posted by weedgrow
Thanks for stopping by Weedgrow
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