Borrowed the one from my buddy that hangs on the ceiling and you throw the little sulphor pellets in there and plug her in. I am curious about a few things. a.) does ventilation have to be off? b.) where do I hang it? right above the plants or in a corner? c.) how long does ventilation have to be off for... five hours or so like a regular bomb? d.) how much of the pellets are you supposed to use? he said it's enough for one burn but i want to be sure. e.) osilating fans on during the sulphor bomb?