I started using eagle 20. With pro tekt as a surfactant and ph between 4.5-5.5(i guess this is the correct foliar ph range). I usually combat pm with a neem oil pro tekt sm-90 foliar mix. Sometimes it wouldnt do the trick though. So now im realizing for true results a systemic fungicide is the way to go. Think if i use the eagle 20 in late veg/week1 of flower and then run my neem solution at like week 3-4 i should be pm free through a 9 week run? Ive sterilized the environment and it always comes back eventually.