At the moment I am running the Pro-Grow 260 which sucks in about 190w, and I also have 4 x 20w CFL in there for heating purposes.

So that gives me 270w. I only kept 2 plants so I could have done much better if I managed the canopy better and had 4 plants maybe.

Keeping the plants short and not growing over each other is important. I learned this the hard way !

I couldn't hazard a guess right now as to what the final weight will be. I know I will be happy anyway. I have my axe sharpened and 6 large storage jars at the ready for curing.

On average 70% of the weight of the freshly harvested weed will be lost through water. So 100 grams wet is really 30 grams dry... (not that I don't think you can do the math )

It won't be too long now until I hack these babies down ! Yummy I think I can see a few ounces dry so far I hope. I can't wait to take the harvest pictures

So at 270w your friend would get 270grams dry... I don't think I will get that but I did have some teething problems during my first grow with LED and in a tent.

I'm happy I could have been of some help to you I'll be keeping a close eye on your grow