White power mold?

[Mr.furley]

The last couple days I've been finding a couple leafs like this. I'm 6-7 weeks in to flowing and right on schedule for a 8-10 week harvest. looking for the best, and fastest advice on curing it let me know.
temp 70-78f
humidity 40% to 50%
thanks for your time.

[oldjarhead100]

neem oil concentrate can be purchased at lowes get a 1 gallon sprayer as well, mix oil with hot water then let it cool to warm, soak remaining leaves after you cut off leaves with mold present .you can spray buds .If mold is present then I would spray evey 7 days until its gone but with you being so close to bloom I would soak leaves every 3 or 4 days untill the last ten days then the mold does not have enough time to return before harvest what is your ph,what to you use for nutes . what is grow medium. ok so you can spray neem oil right up to harvest it has a funny smell but that dissipates quickly I personally follow a 14 day cycle. the strain im growing now is gorilla glue it is prone to wpm hope that helps. their is a good story on gwe on wpm

[Mr.furley]

Thanks for your quick response again oldjarhead,
PH is 6.2, I'm in coco mix, with fox fram. Positive that it's from my ventilation since I have been working on remedy outside Exchange I believe I could squeeze another 14 days out of these would like to make sure if they're clean though before Harvest

[oldjarhead100]

I try to mix only what i will use because the neem oil separates when it cools off. also I use Green cure with the neem oil. You can not reuse it after it cools off. after harvest clean grow room spray walls top/bottom with neem oil then wipe it off. yes its a nightmare ,if you dont have a ph meter then get one calmag is absorbed best between 5.5 and 6.25 ph and if your plant has enough calmag then wpm can not grow . when I use calmag I also add omeno acid

[Mr.furley]

Thanks oldjar head for the detailed instructions on how to use neem oil I do have some may go this route

[Mr.furley]

Now that you mention it I did cut down on Cal Mag last week.

[Weed Pharma]

Increase air flow & ventilation- decrease humidity below 40%- and spray with a solution of baking soda is an option I used with success. (only had it once in a 27%rh tent- but temps dropped low)

http://www.growweedeasy.com/white-powdery-mildew

Also, I defoliate the large fan leaves, especially leaves touching and give extra space between plants.

[Mr.furley]

Thank weed pharma, It's definitely from ventilation opened the door last night dropped the humidity down to 30% will be remedied till i get a filter next week. Have defolded 90% of the fans two weeks ago, it's sugar leafs stacked up (got me a lot of buds sites!)so close to the end i have been reluctant to defoil anymore,how long did the baking soda method take you?. Any guidance on doing it this way would be
helpful.

[MommaBear]

Thought I had that on mine, here is the info I found

[Mr.furley]

Thanks mammabear, I did read the Gwe article article first but it was a little vague for my situation so close in flowering figured I get multiple opinions from anybody else who may have struggled. I'm not too sure what patc?