Mykos Root Paks are great for hydroponic systems. Mykos Root Paks grow big roots. The biodegradable pack keeps the Mykos at the roots, where it needs to be and not clogging up your system. Mykos is very-specific specie of Mycorrhiza that works faster and stronger. Mycorrhiza is a microbe that builds root mass and increases plant uptake of nutrients and water. With more roots, you get more fruits. It also helps ‘leap start’ new transplants and shield roots from shock and disease. Mykos is a beneficial additive; it may be used with any nutrient line.