General Hydroponics Flora Series Nutrient Kit (3x 5L) - Hardwater
Use this Hard Water hydroponic nutrient kit with water that has a high mineral content, in particular, Calcium and Magnesium ions.
If you are using water that comes from a borehole then your water is probably hard. If your kettle develops scale in it then you have hard water. Rainwater, river water or Reverse Osmosis (RO) water is soft.
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