Hydroflow is a water soluble combination of plants nutrients suitable for use in hydroponic (soilless) crop production systems and when used together with Potassium Sulphate and/or Calcium Nitrate it is a balanced source of macro and micro-nutrients. When Hydroflow is applied to the irrigation water as directed, the nutrients are readily available and provide for optimum plant growth and high yields of good quality. Directions for use: Hydroflow – 1g per Litre Calcium Nitrate – 0.75g per Litre (Summer) Calcium Nitrate – 0.65g per Litre (Winter) MSDS (Material Safety Data Sheet) provided with nutrient set.