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The recipes: one cup of dolomite flour, one tablespoon of citric acid, 500 ml. water. After the reaction has passed, top up to 10 liters with water. One volumetric liter of ash in 10 liters of water. It is mixed and after 24 hours the liquid to the sediment is used for potassium nutrition. A tablespoon of citric acid is added to the precipitate. After the reaction has passed, add up to 10 l with water. Strain and water.