4th week in th cabinet update!! I gotta bunch of lil ladies

the starting fourth week of flowering ,just fishing for comments really, this is my first grow, so i have no idea how things are doing besides what ive read from jorge cervantes I also am seeing brown at top of roots.. am i tripping or is this a real problem?

Lookin fantastic to me!

Id say it juss stain from the nutes also maybe ur water level could be some of the reason. Because the the other 90% of the root is rockin mane. I really don't think there rotten. Looks great to me