Brown Leaves a week before the chop!

This is my first personal grow and was going to chop end of the week, I flushed the plant last Wednesday, but a few leaves have gone brown & dry, I have heard they go yellow but not brown is this normal? the leaves are not getting burnt as using CFL's and there a few inches away from the lights. I don't know if to pull it down now? Any advice please.



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Cheers

Lex