Thanks for the advice on the temps, and yes I used the 2" PVC for the air inlet and outlet(s) for the flower room. Have not put in the hood yet as I am waiting on the HPS 250w light to get here. I think my fan is not positioned properly for max air flow is part of the problem. Due to the fact that the smaller fan was not available locally, I elected to go with the 265 CFM and was 1/4" or so too big. I will turn it and make a few adjustments to the cabinet and hopefully open up a little more air. We'll See I guess. I just went ahead and put all plants on 12/12 at 10pm monday night (05/16) and am hoping I will know what I am looking for. I have not found any real definative pictures or instructions on sexing the plant. One pic on this site was close, but I am a highly visual learner, don't get me wrong, I have NO problem figuring things out, but would be soooooo much easier if there were more information available, ya know?! I think that when I am done with this thing I will post a site specifically for all of those like me. If all of this works out anyway. Being that this is a test run, with a hopefull reward at the end, it will not hurt my feelings to bad if the 12/12 is too much for them. Thanks again for all of your information and interest. It's is extremely helpfull. Will post pics of box later. Talk to Ya!