Please Help

Hey all - This is my second time growing and I can't figure out what's going on. The problem plant is the girl in the upper right of the group shots. She is White Widow and has been flowering for two weeks. She is in Foxfarm ocean forest soil. She was on pureblend nutes with budcandy but i started to notice what i thought was nute burn - yellowing of the edges and tips of her fan leaves- and switched her to straight water. 4 days ago I spotted some white powdery mildew so she got sprayed with some SaferGro Mildew Cure and Humboldt Sticky wetting agent. Now the mildew is gone but i have noticed brown spots on some fan leaves. She also looks a little yellow which I know happens as she gets ready to flower but I thought that doesn't happen for another week or so and the other girls aren't turning yellow. Any thoughts would be greatly appreciated!

P.S. you can see the girl at the bottom of the group photo is sideways. We got a mystery clone and decided to try something new with it and have been pleasantly surprised so far.

Thanks!

There's a few things to consider for your problem plant:

1) It looks to be Nitrogen defecient compared to the others. I just grew/harvested my first White Widow ever grown, and she was a heavy feeder and loved higher levels of Nitrogen than other strains in my garden. This could be part of your problem. Mix a seperate formula with grow ONLY for one feed, moving to a half/half of grow/bloom until you see a lush green return to this plant. From there, stop feeding grow and switch to bloom only unless this problem persists. Unlikely tho, as your requires quantities of Nitrogen are reduced the further into flowering you go.

2) Are you feeding micronutrients to your plants? Consider a Cal-Mag supplement (or start using organic molasses which will give you carbs, requiring less bud candy, and also has iron, cal, mag, & vitamin b-6), a bloom biostimulant with all the micros and some will even include amino acids, vitamins, humic acid, and others ... Looks like they could use it, or more of it if you are already feeding them that

3) Make sure your light distance/temperatures are correct. HPS should be 2 ft away if uncooled, 1 ft away if cooled & enclosed. Make sure there is airflow but nothing too intense, and temps are ideal @ 75 degrees.

Hope this helps homes! +rep???