My buddy always have same probs. They end up with dandy looking buds but no THC. Theirs almost have too much "hay" on them. Or that's best I can explain what the buds looks like. When I grow my own I always get loads of THC, starting to really build up on about 4th week but present before that as well. We have even grown same plants, meaning I took 2 at end of veg and flowered them. They were a little more set up and used MH lights, I only used a load of cfls for mine but mine were covered and theirs were not. The only thing I could think of was that their temps were always at about 35-40c lol They were "plant it and leave it folks" lol I got a bit of OCD on the go and always kept mine between 18c and 26c. Anytime it went over it bothered me and I fixed it. They were in my bedroom and I work from home so I had lots of time to attend to them. Maybe only me but I think the heat made theirs almost furry. Like they were trying to protect from heat.And hey I may be wrong about it all but it works for me!!