General Organics CaMg+ Qt. CaMg+ helps optimize plant nutrition resulting in enhanced growth and healthier flowers and fruits. CaMg+ is a blend of fermented calcium and magnesium complexed with organic acids and sugar chelates. These low molecular weight acids may facilitate calcium and magnesium transport into the plant.Non-soil growing media, like coco coir, rockwool, hydration or other soils applications lack calcium and magnesium, two essential minerals for healthy growth. Generally Hydroponics CaMg+ is organic, derived from oyster shell, dolomite lime and natural plant extracts and has the right ratios of minerals to get your plants healthy and growing, whatever your media.