CNS17? Grow is extremely concentrated, cost effective and produces premium results. It contains all 17 essential elements, making CNS17? Grow an ideal food source for plants to thrive throughout the vegetative growth phase. Optimal ratios of nitrogen and phosphorus promote increased root development, decreased internode spacing and sturdy stalks and branches to support bigger, healthier plants. It also combines high levels of calcium with sulfates and phosphates to guarantee a balanced spectrum of plant nutrients.