PM?

Should I clip off a couple lower fan leaves on a plant flowering for 3 weeks that are covered in powdery mildew? Or should I just keep spraying with serenade?

Try and spray the fuck out of that shit man!!! Most times you have to get the WHOLE PLANT covered till it drips...I have a mildew problem too, and im still in veg I live in a bad area thats not to well maintained and mold is an issue with out plants let alone with them....But it seems when I just spray the shit out of them it relieves them...and the bottle says to do it for a week or too till it's gone...it also controls pests...Let me know how it turns out...we can click clack and share advice...This is my first indoor grow...I usually grow in someones backyard...but roobers and stealers found my shit...so now Im trying this indoor thing...It's a little more demanding...to say the least.

If you can afford to invest the money get a sulfur burner its your best friend if you have bug and mold issues, if its just a few lower leafs snipping them off wont be much of an issue but keep up on the serenade it takes a little bit for the mildew to disappear before you do!