Well you are into week 6 of flower.

It is normal for those fan leaves to start doing what they are doing.

How are the trichs looking?

If the plant is nearing its peak flower, this should be normal.

Looks like its supposed to.....let them go 1/2 brown then cut them off to give more light below.
HARDDON Reviewed by HARDDON on . Flowering, plant trouble (Pictures) Sativa 6 weeks into flowering. Flora Nova/Bloom 600w soil quarter perl with layer of rocks on bottom, 5 gal pot PH 7 Pictures are worth a thousand words.... Rating: 5