Anyway's...The lower leaves dieing and falling off is normal.
It could be from lack of light, because even a 1000 watt light is only meant for a 3 foot deep canopy. So get as any Compact Flouro's as possible and put them facing up toward the lower branches. And start flowering your plants at about 12-18 inches. 18 for indica and 12 for sativa. One reason those leaves are dying is because of the AK-47 in it.Sativa dominant strain. For example I have one big sativa that is SCROGed. And most the bottom leaves just dyed and fell off. So if it starts on the new growth then you got a problem.OK.Anymore questions ,let me know.

Lets see the tops!:thumbsup: