Weedhound Im listening mate just getting confused...heres how I now see things!

Ok the room Ive just used to flower 12 plants in was 6x6x7=36 square foot of floor space.
In here,they where under a 600hps and a 400hps=1000wts.

That should av worked out around 30 watts a square foot so in a 10x10 room it would be lower as steve said 10watts per square foot.

So my new room of 18 square foot is half my last rooms size but with the same 1000wts should get me around the 59watt per square foot...surley being better?

My 12 plants weren,t massive things,flowered at 18" and ended up about 2 and a half foot,there was just so much spare room around them I knew it was the lights,so either I had to upgrade my lights or downsize...so downsize it is,and im probbally going to try and fit a 25 plant sog in this area...Ill let you know how it goes.

Thanks.

Bh.