Cal-Mag Plus is a highly fortified calcium, magnesium and iron plant supplement formulated to correct common deficiencies. Supplementing your preferred nutrient program with CalMag Plus is strongly recommended when using reverse osmosis water and when growing in Coco Coir based medias to compensate for natural calcium draw. Cal-Mag Plus can also be applied as a foliar spray to further enhance growth.
Very good product, fast service, good price. thank you.