Hygrozyme represents a genuine step forward in enzyme treatments that break down old roots and stimulate new growth. Using a unique, bacteria free formulation, Hygrozyme offers growers many benefits over competing products. When it comes to root zone health products, many brands include beneficial bacteria in their formulas which are said to further help keep thing clean and healthy. Hygrozyme forgoes the bacteria and concentrates solely on the enzyme. This is because they believe bacteria can be an unknown variable in a system and so perhaps are not worth the risk. Hygrozyme is compatible with H2O2 products (liquid oxygen) at low ppm, which kill biological agents including most boost additives and root growth feeds. If you are looking to keep your rootzones sterile, Hygrozyme might just be what you need!