The CalMagSi magic potion is an original mixture of calcium, magnesium, silicon, nitrogen and iron. This combination gradually strengthens the structure of the plant and helps it to stay green and healthy. An indispensable product, especially for plants grown in coconut fiber, with hydroponics or LED light sources, where a continuous supply of calcium and magnesium is essential. How to use: use 1-2 ml/1L of irrigation water. In case of serious and visible symptoms, apply 1 ml/1L of water to the leaves.