Can Farm Cal Mag – Suplemento de Calcio y Magnesio para Evitar Carencias

Frequently asked questions

• What is Can Farm Cal Mag for?

  It corrects the calcium and magnesium shortfall that appears when you water with RO or very soft water, or when growing in coco fibre. These are two elements most tap water supplies naturally and which the plant misses as soon as they disappear from the feed.

• How do I know if my plants need Cal Mag?

  The deficiency shows up as interveinal chlorosis and necrosis on the leaf margins, usually around mid-flowering. If you use RO water, soft water or a coco substrate, it is worth adding from the very first watering to prevent it.

• Why is it essential in coco?

  Coco holds on to calcium and potassium, and without correction you get lockouts. Cal Mag puts back into the feed the elements the substrate retains, keeping the nutrition available.

• In what order do you add it to the reservoir?

  Add it to the water before the base nutrient, so the calcium does not compete with the phosphates. As a guide, aim for a starting EC of 0.3-0.4 mS/cm before adding the rest, and adjust the pH last.

• Any precautions when using it?

  Yes: do not mix it as a concentrate with products rich in phosphorus or sulphates. Always add it diluted in the reservoir water and respect the mixing order.

• What does it combine with and what sizes does it come in?

  It goes with both the Grow and Bloom liquid bases and the Dry Veg and Dry Bloom soluble powders, and it works well with Silicate 25 % and with Vita Farm. It is available in 1, 5, 10 and 20 litres.