To start the flower Chamber has a 150w Sunsystems HID , with 3 gallon tubs growing left Sour Kush and right Moby Dick. Veggie chamber Hydrofarn 150w cfl left Sour Kush , and right Purple Haze. As far as the stretch in the flower that happes because I assumed the hard switch on the light cycles. The sides are covered with mylar and cabinet trimming lined with windo foam to seal light in and help with circulation design. The top shelf was alot cleaner than the pics I had just added the Hydrofarm cfl , and I have it set up to house a cloning chamber all 3 gallon tubs . I open to all any suggestions to increase the cabi benefits. I have also switched nutes form Botinicare to Dutch Master on the veggie side , I am going to switch the flower nutes with next cycle.