I've had issues with PM in the past. Safers ...

The only true way to get rid of mold is if you take your hole room apart and clean everything and sterilization of everything replace your soil as it could live in the soil and basically start over. I know a friend who grew for a living and tried to keep going threw it, to fucked everything over had to tair it down and start over they have never had that mistake again. It’s just air flow you don’t want it pounding your plants but you just want a nice breeze everywhere! 👌🌱😁

I would go to the store and get some lysol clothes that you can use to clean your grow environment. The next step would be to evaluate your air flow and humidity situation. In this case I would like get a fan blowing on the plants as well as get a bigger intake and exhaust fan . This will up the air flow in your grow environment and will ensure you dont get PM . Once you cleaned up your grow environment and added some fans this problem should never come back . I hope this information helps you on your quest to the finish line ! - happy growing!

Just the basics good airflow from fan or fans, keeping the relative humidity low in the low 30% to fight off pm and not to cool at night no more then 10 degrees difference . Feed her in the morning before or after lights just come on watering at night can invite mildew problems with cooler night air..treatment wise I've heard great things about sm-90 and a foiler spray of either baking soda 2tbl spoon per gallon of water ...or even milk in 1-6 ratio would help if it hit again ...cheers