Need help on lighting

[J Cakes]

ok so heres my question i have a growbox that i constructed in my closet it 3 feet tall by 3 feet wide by 2 foot deep. right know i have 4 plants germinating in there. There under two 2foot flouresents. I plan on keeping them under there for a bout 2-3 weeks then i was going to replace them with a 400 watt hps/ballast.i have two comp. fans one for intake and one for exhaust. My question is when i switch over the light will the 400 watt HPS become to hott in my growbox?

thnk for your help

 

[purplebud27]

Yes and how tall are you going to grow them cause you will need a least a foot and a half or more space between the light and the plants so they don't burn the tops for the heat issue put another fan in

 

[grodrowithme]

you need more room and better fans or consider doing t5s and some cfls for side lighting

 

[mrmadcow]

I agree w/ the above about the heat - maybe a cooltube would help
you would also be better off w/ 2-3 exhaust fans and a passive intake(aka a hole to let air in)

 

[J Cakes]

ok so i think im going to see if i could extend the height of the box and if so could u suggest a fan that is kinda low budget and would work fo my space?

 

[TheLastJuror]

ok so i think im going to see if i could extend the height of the box and if so could u suggest a fan that is kinda low budget and would work fo my space?

just pick up a couple more pc fans

 

[theycallmeoj]

Don't even use that 400w HPS till you get more height in that box. That HPS will turn it into an oven.

Wrap everything in mylar.

Buy/make a 6" cool tube with a reflector on the top side. Connect the tube to insulated ducting, connect to 6" intake fan drawing in cool outside air, connect the other end to a 6" flange as the exhaust out the box. With such a small space to work with, even a cheap 6" exhaust fan from Lowe's, Menards, Hemp Depot, etc will work.