These are the designs for the grow box I plan to make. Do you think that the computer fan is strong enough for the exhaust? Also, is there any improvements I should make before I begin construction? Thanks, any help and advice is appreciated.
a Pc fan will be stronger enough to exhaust old air ( hot ) out the box ... make sure yo only havr 1 hole for an intake ( smaller hole too ) those holes on ur drawing look far to big Id have 1 about the size of a 2p Coin ; ]
I read somewhere that... Intake Area = 2 x Exhaust Area or maybe I should just cut a large rectangle out?
I'dunno I'd say It would be half the size of your exhaust ... But Its up to yoy I only know what i read ; ]
I haven't used my pg box for a couple of years now, but... The space is so small, mount your light horizontal, then use a small piece of plexi to separate it from the grow space. Use the power supply case to house your timer, ballast, and fan power supply (or use 120v fan with temp switch). Put your passive intake on the bottom rear and make a light trap inside. air vents for you hood on the front horizontal plane. this way you have cross flow of air for both the plant and the light. Oh yeah, because of the size, only use one plant with a rectangle pot as close to the size limit you can get. To get the most yield you will have to SCROG or super crop. Here... I used Google Sketchup and made a rendering. It isn't to scale, but you get the idea.
Yh I see , thats some good Info you got there man - You know what your doing m8 , That drawing is pretty sick too , could u link me to this Goodle Sketch thing ? would be much appreciated = ] Looks like your putting a lot of effort Into having the best air flow , Hope u mange to work it all out maybe you could record a video when It's all In order ( blow some smoke through to see the flow of air ? )
what i did instead of making a grow box. i just hollowed out a 4.5 ft dresser like the one you put cloths in lol. and just put the faces of the drawers back onto it to make it look normal again. stealthy and easy. people dont even know theres weed growing inside.
I'm sticking with the vertical light and creating a circular screen around the light to train 1 or 2 plants to. Also placing the fan in the corner at the bottom middle pointing up at the bulb. Also, do you have any recommendations for a fan that will strong enough to pull through the filter and everything. The one I have isn't strong enough. Thanks for the input its appreciated.
I have run a bare bulb vert 150w HPS in a 18"x18"x24" I.D. homemade cabinet with eight two inch holes two on each wall, just above container height. The exhaust was only an ~80 cfm PC fan. Temps were 75 Degrees Fahrenheit. The trouble however was if I used a carbon filter, the little PC fan couldn't hack it anymore. If you had a low odor strain like NL, you could easily pull it off. I could fit eight 5" pots in there around the lamp, and pull one every week. I think you should at least try vert, it gives the little 150 a LOT more growing area than horizontal orientation. In my little cab I have ~9 square feet of growing space with the furthest point away from the lamp was like 8", and plants could grow within two inches of it no prob. All aspects included, I paid less than $100 to put it together, and it still works great. Oops, I still had the Bake-a-Round cool tube on it at this point, but it wasn't necessary, so instead of wasting lumens I ditched it. Good luck bro!
FRYS.com | Enermax i use two of those for exhaust with a carbon filter in the middle of them. they run off a universal adapter like this Google Image Result for http://www.220converters.com/store/i/is.aspx?path=/images/ss105.jpg lets you pick the volts and control the speed of the fans whenever u want. also, having stacked fans adds pulling/pushing pressure. and u can wire them both to this one adapter.. and yes you are correct about the intake size being atleast 2x bigger. but the bigger the better, less restriction.