Whats the most light I should consider putting in this size tent? Its a cube shaped (2x2x2m) chamber made from PVC. I already have a 1000w lamp. Will this be sufficient for the whole tent?
Would adding a second lamp give me problems with temperature? I use a 200mm exhaust and 150mm intake if this helps.

Thanks in advance.

Well im using a double and with one single 600w the tent is about 23c, so with 1000w should get around 25-26 would imagine, i use 2 x 600w and without a fan blowing it can reach 29c -30c when zipped up with lights on.

Also using the same intake and extract.

Edited, should add mine is 1.2 by 2m by 2m, misread the title.

4 400 0r 4 600 air cooled maybe good luck

I'd go with 4 x400's mate

I personally wouldnt bother with 1000's as they are just about the most inefficient bulbs going

Owd

Thanks for the repiles.
Is there any possibility that the single 1000w lamp will spread enough light to sustain the tent? I dont have an adjustable reflector.

I dont have funds for 4x lamp setups although I appreciate the input Owd.

No chance mate

The biggest space i'd go with,with one bulb is 4x4ft and that would be with a really good shade

Owd

Just try and section a bit off. A 1000watter will still give you a cracking yield i'm sure.

Another vote for 4x400W's from me, if you wanted to get a mega yield then 4x600W's would be tremendous as long as the extraction is up for it.