Buds stopped growing after three weeks?!?

i'm at 35 days into flower with some bag weed and they havn't grown at all in the last two weeks, the first three weeks they grew like craZy but now stopped, i dont have a microscope to check the trichs and alot of the hairs are red but.... done??

is there anything else goin on in there?

the colas are probably 6+ inches

u can have nutrient lock up do u have any pics?

yeah, i'll get them up later, i just changed my nutes last week, hmmm, maybe they flower real fast?