Powdery Mildew in day 7 of flower

I'm growing indoors under gc roi 720 LED in FFOF/FFHF soil in 10 gallon fabric containers and watering every 3 or 4 days in a 5x5 tent with 6 inch exhaust inline fan. I have 1 rotating regular 12 inch fan and am gonna purchase another clip on oscillating fan after my discovery. I vegged these ladies for a pretty long time like 6 or maybe even 7 weeks and topped once and did LST to get pretty bushy plants. The Temps do fluctuate a bit from like 75 degrees when lights are out and up to 85 with lights on. I recently put a dehumidifier in the lung room since starting to flower so my humidity goes from like 39% to 50%. What is my best course of action to get the PM under control? I think it early enough in flower that I can still spray. Does spraying milk work or would I be better off using a product like Dr. Zymes? Any input is much appreciated!

I would cut those leaves off. Spraying milk doesn’t really work. I’m not sure what to suggest after you cut the leaves off

Citrus acid

Doctor zymes

Milk one part water ten parts does so work! IF it hasn't become systemic yet! I raise the rh after removing affected leaves. Yes l raise it as high as 85 rh and get heat up in 90s. Needs extra co2 also if hotboxing so it won't Fuck with them. Look up pm and see it's optimum rh and then make your own conclusions. Or lower rh and lower temps. Can do either way! Believe pm optimum rh is 55-75 and around 70 degrees. Don't take my word on this but it gives you two avenues to follow. Raising everything will also increase growth, you may need to cut back nutes too. Google helps but so does growing in a humid environment. Can't wait for my beatdown on this post. Best of luck and hope this helps! Look up LABS on youtube! Lactic acid bacterium. Raising and lowering ph can be effective to. Happy growing!