400w hps...what's too small?

I am about to do a micro grow, and am in the process getting set up. I want to keep it small. Not quite PC case, but along the lines of a rubbermaid container. How small is too small for a 400w hps? Whats the min. size I could get away with assuming I kept the heat down?

400 watts are pretty cool running. What size area were you thinking about using? 400 watts can light like a 3x3 area really well. 4x4 if you push it. It can do less than that if you keep temps down..

yeah 3x3 or 4x4 is recommended for a 400w. if you did it in a rubbermaid container I would imagine it would be hard to fit the bulb and hood and all that in it. There not that big, but bigger than a rubbermaid container would fit. Unless of course your getting a gigantic container or something. I'm sure they probably make one.

Hi,
I've got a triangle room in the corner of my garage. The sides are 870mm x 870mm x 1400 and its 1500mm high. will a 400w hps be to big for 2 plants in this area?? any help would be appreciated, cheers , Jakel

I'm sure a 400 would be fine in this area providing there is some kind of extraction. I have a 400 in a 800x800 by 1600mm high and it works fine with no heat issues

Thanks for the reply so quick. Basically i've got 2 fem widow seeds (the new strain from rhino seeds) that i'm germinating as i write.
I plan to start these under 2 fluorscents that give out around 2000 lumens. I can add another 2000 if that'll help??? I have read the more the better but be careful not to burn.
Plan on leaving them under the flo's on 18/6 for 2-3 weeks then put them under the 400w to finish the veg, then use it on 12/12 to flower??

Does this sound any good, for i am a newbie!!

Any help would be GREAT!!!!!!!!!
Thanks

that sounds about right...veg any longer and you will not get sufficient canopy penetration

cool, these seeds (http://www.cannabis-seeds.co.uk/the-widow.php) say 7-8 weeeks flowering so how long do you think i shud look at vegging them for?? cheers

wow omarat's post totally just got high jacked

haha, i didnt mean to high jack anything, just not great with a computer and didnt really look at starting my own thread. when they did I.T at school i was on the top field getting cained

any views on my 1st grow, about using flo's to start my seeds then finishing the veg off wiv my 400w, before switching to 12/12??