Z9 protects the roots and growing medium from microscopic particulate, mineral build up, and inanimate slimy conditions. It also helps stabilize the pH swings caused by the interaction between plant nutrients, dead plant cells and chemical additives. It keeps hydroponic pipes, tanks and soil drip watering systems free from slime and mineral build up. Z9 can be used in both soil growing and hydroponic systems. It is compatible with any plant food (organic or chemical), or Mycorrhizae supplement. It is available in 237ml & 946ml.