Are these bugs? I just drilled a hole in my wal for ventilation and it was dry wall...Thats what I thought this white shit was....But now I'm not so sure...Any help???
Thought you were on about the yellowing - neways I sometimes get white residue on my leaves but it rubs off and they aren't bugs and my fingers smell like wet grass/weed so you should be ok as long as they rub off and don't move.
Don't see a hole dude, soz you need better pics - I will say you have yellow spots on most of those leaves which could either be nute burn or some kind of nute defficiency.
