LOL, have you been watching the Urban Grower vids on utube? He convinced me I might need one too. The fact that my local grow store doesn't even carry them convinced me that they might not be as critical as some suggest. This is by no means advice.
hey guys
i would guess you are haveing problem with powdery mildew,
in the room i had last wintre mildew was a problem i was going to get one but did not i suppose they work
i had to use powdered sulfer this summer out side it worked great
