Mills CalMag

The Days of Worrying About Soft Water or Plant Deficiencies Are Gone with Cal Mag

Mills CalMag provides the vital minerals of magnesium and calcium to your plants, which helps to strengthen and accelerate their growth. It also stops your plants from forming unwanted deficiencies such as yellowing leaves and stunted growth.

  • Hardens soft water
  • Increases the levels of calcium and magnesium in your plants
  • Improves the quality and overall health of your plants
  • Prevents and solves your plants’ mineral deficiencies
  • Promotes plant growth
  • Helps to raise and stabilise EC levels to correct range


1x 1 litre of Mills Nutrients Cal Mag

How Cal Mag works:

Cal Mag works to provide your plants with Calcium and Magnesium, which are both essential for nutrient absorption and photosynthesis. With these minerals you can stabilise your EC level, which is important to maintain in order for your plants to grow and flower efficiently.

In areas with soft water it is very important to use Cal Mag to harder your water, which will allow your plants to flourish successfully. Hard water helps your plants to absorb nutrients easier, which help throughout the grow cycle.

When using Mills Nutrients Basis A + B, you will already be feeding your plants a sufficient amount of Calcium and Magnesium, but if you notice deficiencies then it could indicate that more of these minerals are needed. If this is the case, then Cal Mag has you covered.

Using Cal Mag:

Cal Mag must be kept out of reach of children, and is harmful if it comes into contact with your eyes. Avoid ingesting or breathing in the product, as it could be corrosive and harmful to your health if swallowed. Avoid direct heat, fire, or contact with your skin, as prolonged exposure could cause irritation.

Chemical Composition

Nitrogen (N): 8.3% w/w

Which Nitrogen (N-N2O): 8.3% w/w

Calcium Oxide (CaO): 13.1% w/w Soluble in water

Magnesium Oxide (MgO): 2.5% w/w soluble in water

Physical Appearance

Appearance: Liquid

Colour: Colourless

Density: 1.24 kg/l

pH: <1


Mills CalMag 1L, 5L