Yup. I wasn't thinking.. mag not cal* but still.. And OP... How old are your plants and have you been giving them nutes before now?
Three months and no food? Yea, she is hungry. Have you ever heard of "Liebig's law of the minimum, often simply called Liebig's lawor the law of the minimum, is a principle developed in agricultural science by Carl Sprengel (1828) and later popularized by Justus von Liebig."