Sounds like white powder mold. I see it here. If it get loose in your room you're screwed. I use 1 teaspoon baking soda to 16 oz water and a drop or two of detergent to keep in in check. Spray the shit out of the plant. You will not get rid of the white powder but you can keep it from spreading.
oldhaole Reviewed by oldhaole on . White Powder on Leaves :rasta:Good Day :rasta: I am looking after 46 plants that are into 5 week of flower. Using Sunshine# 1, PH 6.3 EC 196. Fert Fish Emolusion. 3 - 1000 HPS. Lots of air in and out. circulatining fan running 24/7. Lights are 12/12 now. The past month I had to deal with a Nute problem fixed with epsom salts. Prior to the nute problem I noticed that at times there was a fine white powder on some of the leaves. I can wipe the powder off the leaves, however it will not wash off with fine spray. Rating: 5