building a birthday box and i need help suggestions

[masterjointsmith]

there is the idea so far .... any reason i shouldnt do this

brown is reinforcement 1x2
green is the 400watt enclosed lowbay hps
red is wood removed from the cabinet

would 5inch holes be enuff for cooling or should i use less holes and an inline air pump if i should go with active cooling how many cfm should i have total pullin air outta the vent

masterjointsmith Reviewed by masterjointsmith on 12-27-2006. building a birthday box and i need help suggestions there is the idea so far .... any reason i shouldnt do this brown is reinforcement 1x2 green is the 400watt enclosed lowbay hps red is wood removed from the cabinet would 5inch holes be enuff for cooling or should i use less holes and an inline air pump if i should go with active cooling how many cfm should i have total pullin air outta the vent Rating: 5

[crazywill]

Hi masterjointsmith
I would put two small 3x3 or 4x4 computer fans in the top holes blowing out of the cab.Also two vents at the bottom of the cab one on each side with a third in the back of the cab in the middle top with a 6"fan pulling air out of the cab.I think the computer fans are 25cfm and the 6' fan is 180cfm.I got mind from surpluscenter.com they were under $35.00 for all three.I would put glass under the light about 3" or 4" to seal off alot of heat from the light.
It's a good plan with the cab.Well that's my two cents.
Peace and Happy Token

[dusto2k3]

Yeah, seal the light from thgrow space. There are other threads that discuss the effects of the glass on the light, and it seems to be none or very minimal. Also, i have heard of others having good results controlling heat with the design.

Also, i'm sure you were planning on venting the light space up and out the two holes you will be making on the top of the cab. and maybe using the other 4 on the sides as passive.

That thing looks great. A friend just made one, here, here's the link:

Cabinet

[dusto2k3]

by the way, how much is one of those cabinets?

[doco]

My setup is geared more towards cloning and vegging so being light proof is not an issue but beyond that, I think the suggestions you've gotten are good ones. That light is going to be quite warm so separating with a piece of glass is a good idea. You will want some exhaust fans - I use two in mine: 110 cfm in the bottom which is on 18/6 when the T5 lamps are on and a 85cfm in the top which runs all the time, 24/7. The temps in my cabinet are within 3 or 4 degrees of the outside room with the lights on.

Intake can be passive and work fine. If you are going to flower in there, you will need to light proof it as well. Like Dusto2K3 said, there are many threads on here that successfully use HID lamps in cabs like this so you have all the info you need right at your fingertips.

Frankly if it were me doing it, I would use a cooltube ($60) and a 4" vortex fan ($100) and that would be the end of most heat problems (except radiant heat which fans don't help)

I think these are like $100 to $180 Dusto2K3 - I got mine from someone getting rid of theirs so I didn't have to pay for it.

Good Luck and happy growing!!

[dusto2k3]

lucky son-of-a-gun

[masterjointsmith]

ya they were 120 for the 2x4' one with the divider down the middle and it think the 2x2.5 one is like 100 or 80

[trynagethigh]

just go on craigslist.com, there are plenty of cabs there, a lot people are getting rid of for free