Couldn't get any responce on the light thread, so I will ask my homies. Hopefully this will help speed up my grow. I had to do something about that light. When they were in that north facing window they only got a couple hours of sun a day. Because of that, I made a grow room in my closet. The lights I had were 2 CFL's. One 15W 2700k, and a 23W 2700k. They were a couple I had around the house. I don't know the lumens, but I am guessing 600 to 800. It is only a wild guess. After looking at pictures of others grows here,and paying attention to when the pictures were posted, I thought mine should have developed more than they are. So I stopped at Walmart and found a 2 pack CFL, 6500K 20W 1150 lumens, for only $7.00. I sure hope this helps. I have read that 6500K are better for the veg. time, and 2700 are better for the bud time. I am wondering something though. Would there be any thing bad about having both the 2700K and the 6500K going at the same time? For now I only have the 6500K in there. Maybe all them lumens added would be an advantage. I don't know. Maybe if it is just 6500K lights I would get shorter busher plants. Maybe if I had both they would be taller, busher plants. I read if one has only 2700K lights the plants will be taller because they are seeking the light they need. I welcome any advise that will make clear this issue for me. One thing I do like about them CFL's is, I can buy a couple at a time as they are needed.