Can anyone help me I'm like 2 to 3 weeks into flowering and the leaves are all turning yellow, and I had black spot all over the stem and when I scrapped them of it was like a hard shell. What the hell is it? and I think I may have spider mites. I've sprayed the entire plant with soapy water...
This is my first grow and I've experienced the same, I guess I wouldn't say problem, situation and from the information I've gathered it is room temperature thing.