I posted 11 days ago with pics and questions. Since then I have installed a 4 ft light with 2 bulbs. I can not remember the brand, but they put out 2,2500 Lumens each. I also moved them to 3 inches from the tops of the plants. No heat from these things at all. I also began flowering 1 week ago. Can you see a sex? How do they look? They are all 9 inches tall. I put some before and after pics up here. If you see the dates on the pics that is 11 days of growth, 7 days of it on 12/12.