Thanks. I've wondered that about anti-fungal sprays as well. I have some actinovate and some serenade but I haven't really used them.Always spray in the mornings so it dries out during the day. dont spray daily and stop spraying the last week or so of flowering if you are worried about mold. There are some anti-fungi sprays that prevent molds, dont know how they work since your making them wet with spray.