My plants are almost 4 weeks into flower. They have been doing fine and then I noticed that the leaves started to get brown spots on them and from there turn yellow and curl upwards. I think that this may be a magnesium deficiency, so I gave them 1 tblspn Epsom salt per gallon 2 days ago and they keep getting worse. I am not even sure if this is the problem, or how long it takes for them to stop getting worse if it is. I give them 15-30-15 ferts about once a week, I was thinking about flushing them, but I wanted to find out what's going on before I did that. Any help would be appreciated.
