Got rid of the cfl's on top and replaced them with a 100 watt blackstar UFO and added a 20 watt UV bulb along with the 2 T5's and the Kessil that were already there. Box is running much cooler now.
Day 15 - 30cm when flower was induced, it's now 43cm. A lot of the lower leaves are dying off. The outer edges turn brown, the leaf then turns yellow and wilts. Any suggestions/remedies?
Natural progression when you go into flower. The growth leaves are no longer needed. The plant starts taking the nutrients out of the fan leaves and they die. You should be fine.