Yes, I believe it does... Some people don't think so though. Check this out, this is where I got it from http://growyourownmedicine.blogspot.com/2011/04/med-man-method.html
I use a box to give them the 36hr dark before flower, and will use the box again if she will fit under it for the 72hr dark period pre-chop. You will see buds sooner with the 36hr dark pre-flower
I use a box to give them the 36hr dark before flower, and will use the box again if she will fit under it for the 72hr dark period pre-chop. You will see buds sooner with the 36hr dark pre-flower