Hygrozyme™ is North America's #1 selling horticultural enzyme formula. Hygrozyme™ is a powerful blend of concentrated, beneficial enzymes that work synergistically to ensure plants achieve their full genetic potential. Hygrozyme™ unique proprietary formula contains the highest units/mL of cellulase, which rapidly breaks down dead root matter and converts it into simple sugars which feed your beneficial bacteria. Hygrozyme™ is effective in all growing media & growth stages, and is compatible with all nutrient & supplement programs.