I’m in week four of my first ever grow (white widow autoflower) and something is wrong with the leaves. I’m not sure if I should be concerned or not. Also there are these little black bugs (picture attached), not sure what they are or how to deal with it.
Looks like a fungus gnat which implies over watering. This would also account for the appearance of the leaves. Cal mag is a good idea as well.
My last grow had leaves that looked exactly like that - general consensus from the awesome grow masters here was calcium as well so I upped my Cal/Mag and that seemed to work. The old leaves will stay damaged so keep an eye out on the newer growth.