are u sure thats what deficiant?..be careful u dont hurt the plant..(althought the miracle grow wont hurt ur plant)...but test ur ph sometimes it has to do with that....smoke on..peace
When growing marijuana in soil the pH of the soil should be between 6.5 and 7.0. When growing in containers, a single pH reading for each container is recommended. When growing outdoors in a garden, it is best to take two or three pH measurements from different areas of the garden.