Magnesium deficiency? If my memory serves me correctly I had the same problem when I grew cannabis. Not sure as to quantity but try adding some Epsom salts diluted in water. Perhaps someone else can recommend a ratio of Epsom salts to water?
Magnesium deficiency? If my memory serves me correctly I had the same problem when I grew cannabis. Not sure as to quantity but try adding some Epsom salts diluted in water. Perhaps someone else can recommend a ratio of Epsom salts to water?