Help!!!!!!

Hi there, i hope that someone out there can help me, well my girl is 6th week + flowering she is a bubbilicious, nirvana seeds the problem is that the fan leaves are all starting to dry around the edges and go very crispy, they r also curling upwards ,also the hairs on her are starting to go brownish colour i no this is meant to happen but im thinking could the leaves be causing this i hope not because i dont want to have to strip her before her time as i havent really got a big yeild of off her, the small buds at the bottom of the plant that r not getting ny light, i was thinking of after stripping her i might try n put the lower buds back into veg, for a week or two just to give them a chance of being the same size as the other popcorn.
250watt hps 1x1x2 tent 3 small fans bio-bizz nutes.

this is normal. Usually during flowering time, the fan leaves tend to die. and the "flower leaves" start to grow. check out youtube vids of this.

It looks like a little dry water well don't be shy it's normal the bottom buds are smaller when it comes to harvesting you'l know most pistills will turn amber Don't harvest to soon as the last few day's make all the difference and the bud swells when the leave edges curl up it's a bit to much heat from the light not to worry good luck