I forgot to add
Sorry forgot to add some details , This is a Soil Grow , I did have spider mites and neemed oil many times, its a inside grow, used just right soil ,and using Humboldt county 3 part, i found it strange that the plant (same stran next to it was getting the same spots) I am going to do a insect check tonight.
I have been using Cal Mag , I will verify the PH of the soil tonight as well make sure its inline
anyother ideas anyone?