Premium Plant Nutrient 2-0-0 Botanicare Cal-Mag Plus (2-0-0) is a custom blend of calcium complex with nitrate nitrogen and a highly soluble form of chelated magnesium. This combination prevents calcium and magnesium deficiencies as well as blossom end rot in tomatoes and peppers. Cal-Mag Plus also contains iron, boron, zinc, manganese, molybdenum, copper, cobalt, beneficial vitamins, amino acids and botanical extracts. This supplement can be used with standard nutrient formulations or as a foliar application for plants grown in soil and hydroponic systems.