greencure works with weekly applications - can be light sensitive so follow directions carefully
you cant do anything to KILL the pm at this point all you can do is battle it
what everybody else been saying is right on - more ventilation, air movement, more light and keeping humidity under 50%
PM likes cold, stagnant low light areas of the room
when I was battling pm it seemed to outbreak and/or spread when the humidity reached about 55%
one of the reasons the humidity spikes when the lights go off is the temp drops - keep your lights on and off temps within 10 degrees and it wont spike so bad
also if your grow is vented keep the fan running 24/7
I highly recommend
green cure, its the only thing that saved me from disaster a few years back
good luck