Calmag alga is an all-natural soil improver high in calcium, magnesium, vitamins, minerals and trace elements. It ensures rapid absorption of calcium and magnesium, allowing plants to grow optimally. It also regulates soil Ph (5,5-6,5), increases microbial activity, improves nutrient storage capacity, stimulates soil life and strengthens plant cell walls. Yields will be more abundant and of higher quality, and plants more resistant to attack by pests, fungi and pathogens.