Cal Mag is a custom plant supplement designed to help with calcium, magnesium and iron deficiencies in nutrient fertilizer programs. Cal Mag Plus serves as a catalyst for the major elements to work in symbiosis with one another to prevent blossom end rot in tomatoes and peppers and tip burn in lettuce. Cal Mag Plus is a bio-catalyst for plants; a highly beneficial plant nutrient supplement to correct the inherent problem of calcium, magnesium and iron mineral deficiencies found in most soil fertilizers and some hydroponic nutrient liquid concentrated formulas. Helps prevent: blossom end rot in tomatoes and peppers; tip burn in lettuce and cabbage; dry and withered flower and fruit set; interveinal chlorosis; stunted growth rates and upward leaf curl. It help increase: cell division and plant tissue development; flower and fruit sets; water nutrient and carbon dioxide uptake and growth rates and crop maturity.