Powdery mildew found on the day of harvest!

Sorry no pics as my camera is down for now.. im growing 5 moby dick#2 2 blue widow and 1 god bud.. everything went smooth up untill now.. the past 4 days before harvest the lights have been off. (dinafem suggested 4 days for the blue widow) i watered plants the day before they went dark and stupid me forgot that all the res is gonna be sitting there adding humidity. So to my problem, i noticed a couple white spots on the crowns of my plants only. they look like spider webs and im pretty sure its powdery mildew. The problem only seems to be on the crowns of the plants. and not all of them are showing this powder.. so i went ahead and harvested anyway cause there wasnt much at all but i am just wondering if i should spray them with h202 or something? or should the mildew be gone by the time their done drying?

134 views and nobody can suggest anything?? i washed all my plants in H202 last night does anyone know if this will sterilize the fungi?

[video=youtube;S7jE7qzfgQs]http://www.youtube.com/watch?v=S7jE7qzfgQs[/video]

Errrm..... its not on the top of the water. It's pesticide prolly neem. He's also oxidizing the plant oils rendering them less potent.

yes i did that.. it was either that or let them grow mold so at least they will still have some potency.... also i think i was wrong about it being mildew. looks like maybe its botyris! do i need to put a fungicide on it or anything or should the H202 be good enough?