Dutchpro CalMag Calcium & Magnesium Supplement – 1L & 5L

• Dutchpro CalMag Calcium & Magnesium Supplement

  Dutchpro CalMag is a liquid calcium and magnesium supplement for plant feeding programmes. It is particularly useful when preparing nutrients with soft or reverse osmosis (RO) water, which contains little of either mineral. It can be used alongside Dutchpro base nutrients in soil, coco and hydroponic systems.

  Key features

  • Supplies calcium and magnesium for plant development.
  • Helps account for the low mineral content of soft and RO water.
  • Suitable for soil, coco and hydroponic feeding programmes.
  • Available in 1L and 5L sizes.

  How to use

  Dutchpro's current nutrient calculator lists CalMag at 0.1–1ml per litre of water. The appropriate amount depends on the starting water and feeding programme. Measure the water's EC and follow the relevant Dutchpro feeding schedule.

  When using RO water, Dutchpro advises adding CalMag to the water before A&B base nutrients, bringing the starting EC to 0.3–0.4 mS/cm. Mix each nutrient into the water separately.