after some back tracking 1 plant 4wks ago had a rust spot on it. i never thought anything of it but those spots spread on that one plant but it was spaced away from others touching it. installed new fan and sprayed neem oil for the bugs munching. the spots spread fast and through that particular g.house in 1 day but kinda slowly from that 1 plant. it spread fast in the last days. after some research i have never experienced anything like it and septoria fungus is my best conclusion. milk h202 garlic and baking soda mixed up is the plan. i wish we had eagle 20 in stores.