Bree... thanks for the response. As for your lumens/wattage questioning, the numbers you have quoted are if you have the light 1' away. I have looked at the J. Cervantes 'indoor grow bible' which has a table in it for each lamp, and how far away to have it from the plants in order to deliver the disired number of lumens (10K). The heat on the other hand, I haven't taken into consideration. I didn't think 1 light with a fan blowing on the cabinet would require additional exhaust vents. I've seen plants grown with flouro tubes, and they just don't seem to get enough light... growing in a window is more effective.