CalMag Plus is a vital part of growing marijuana, and you can make your own comparable version easily for a fraction of the price of commercially available ones. This is a highly fortified calcium, magnesium and iron plant supplement that is designed to correct common deficiencies.
77.83 grams of Calcium Nitrate
77.83 grams of Magnesium Nitrate
7.89 grams of 13% Iron EDTA
1 quart of distilled water
soil gardens: 4.75 ml per gallon of water
hydroponics: 9.5 ml per gallon of water