Choose a searcher


Save 10%
Tax included

Cal-Mag is designed to correct nutrient deficiencies, specifically calcium and magnesium. You can also use it to increase EC in soft water or osmosis water.

Capacity Precio
Secure gift with your purchase

By buying this product you can collect up to 2 loyalty points. Your cart will total 2 loyaltypointsrsi that can be converted into a voucher of € 0.40.

Más de 40  España, Chile & Colombia 100% safe payment, protected data
Regalo en todos  tus pedidos Discreet Shipping 24 h
Envío gratuito en superiores a 30 € Do you need help? 0034 962066298

Cal-Mag by Mills is a simple product that every grower should have among their arsenal of cannabis growing products. Calcium and magnesium are incredibly important elements for your plants, which is why they need to be able to absorb them at all times.

This product is also used to increase EC in osmosis and distilled water or water with an EC lower than 0.4. It’s essentially a mineral base that helps your plants structure to stay sturdy and strong, as well as helping them with photosynthesis and the flowering period.

If your plants are lacking in calcium or magnesium you can easily correct any deficiencies by using moderate doses of Mills Cal-Mag. Calcium and magnesium or two of the most common deficiencies in cannabis plants, so having this product handy to fix it asap would be ideal, as it can stress your plants out quite a lot. You can spray it on your plants if you’re looking to get the fastest results.

Dosage and how to use:

  • Use 0.5-1ml as a general dose.
  • In order to increase EC add 0.5ml per liter and measure EC. Repeat if necessary (up to 0.4 EC).
  • When sprayed, use 0.5ml per liter of water. Make sure to spray in low lighting.
  • Can be used in coco coir, hydroponics and peat.


  • Nitrogen: 8.3% w/w
  • Magnesium: 2.5%
  • Calcium: 13.1%

You might also like

Cal-Mag Reviews


Nunca falta un cal mag en mis cultivos, sea de la marca que sea. He probado este y funciona tan bien como otros. recomendable por supuest

Write your review