He did say soil in the first post. If i had to guess i would say mag def from to acidic soil. try to get the soil ph up around 6.5Like the other person said, you have not given enough info. heck, you have not even told us if it is soil or Hydro. Give all the info you can. Nuts, temps, ph, grow type, humidity. ALL OF IT. With out all this info, it might just be Aliens that landed and piss'd in your pots.
Thank you . my next watering is tomorrow. So i will run water with half a teaspoon of Epsom salt through it with a Ph of 6.5 and see what happens .now knowing whats going into it i would def say its mg....raise your ph a up to around 6.5 to keep from locking out the mg...maybe do a half a teaspoon of epsom salt in your next feeding/watering
just remember that the damage it has wont get any better...check to make sure no more signs of deficiency showing on newer growthThank you . my next watering is tomorrow. So i will run water with half a teaspoon of Epsom salt through it with a Ph of 6.5 and see what happens .