Hi guys, basically im building a box and ive got a couple questions about lighting. First off, the box is about 60x40x80(cm), made out of timber, its 12mm think, and the whole interior is covered in mylar. Now my question is, whats the deal with putting an HPS in there? would i definately need a reflector? Would it just get too hot for the timber? I dont want to leave home and come back to a burnt down house I cant put any extraction fans in there ive only got a desktop fan blowing at the plants for a bit of circulation. Im sort of thinking of just going for 2x 250W CFL's which ive found here
Basement Lighting Hydroponics and Grow Lights UK
Also i should mention that im growing Lowryder 2's in an aerogarden so the lights will be on 24/7.
Any help will be much appreciated, cheers!

well i think that you will be fine with what you've got. lol i've got a cardboard box 12"x15"x3' with two 1700 lumen flueresent lights and one of those heater fans for exaughst cut in the side and the plants are doing great

well the thing is at the mo ive only got 52W of cfl lighting, which is pretty lame, im after a nice yield really.

why cant you put an exhaust fan in there? with out one pretty much any lite will get too hot

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i duno really i guess i just dont want the smell from the box getting out from the exhaust fan, i know i could put a carbon filter in etc etc but its still pretty expensive n im at uni so my budgets pretty low.

but yeh what i wanted to know was what will happen if i put just the HPS in there with no reflector just an oscillating fan? would it kill my plants?

bump? sorry to pester, but do you guys really want to be responsible for 7 dead plants?!?!

You are going to need some sort of intake or exhaust mate. The plants are going to need fresh co2 coming into it somehow. If smell is a problem, you are either going to have to not grow, or find some sort of odor control.

just a computer fan inside, is not going to bring in fresh air, its just going to circulate the old air thats already in there.

Hope you figure something out <3

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the area seems kind of small.
you should mention how many watts the hps has.

am i doing conversions wrong or is 60x40x80cm a really small box?

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Yeah i was thinking of a computer fan, but i wouldnt know how to wire it to the mains, dont they have a unique power connection that plugs straight into the motherboard? if someone could explain how i could splice the cable that would be perfect! Yeah the box isnt huge but im only planning on having 2-3 plants in there, plus dont forgert theyre lowryders, so they wont grow more than 25-40cm. my plans for lighting now are to have 2x 250W CFL's running 24/7, and then ill turn the 400W hps on when im home so i can keep an eye out. So your saying if i put that exhaust fan in there then the box wont overheat and burn? sorry for the noob questions, as you may have guessed it based on me using an aerogarden and growing lowryders, i am the noobest of the noob cheers guys