Hi there, I have a grow of 4 plants and three of them are going yellow in the bottom, oldest growth. Some of these leaves have gone crispy and brown and dropping to bits. They are 6 week old, 2 week into flowering and have been fed twice so far. Here are some pictures for you to see what you think.
just give it some plain water to flush it and then give them some water with a alka saltz tablet in it gives the plant some magnesium reduces the yellowness what light r u using? temp? ph?
Wow, make sure your not pot bound and then feed that thing something with a good balance of npk in it. Don't go crazy, and make sure the roots arent out of room first.