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BOTANICARE CalMag Plus

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BOTANICARE CalMag Plus

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£8.25
Product Code: BOTANICARE CalMag Plus

Cal-Mag Plus is no ordinary calmag supplement. Not only does it provide a healthy dose of calcium and magnesium (two secondary macronutrients that are missing from soft water), it also contains a blend of trace minerals to ensure that your plants get everything they need for peak growth and development.



  • Botanicare - a firm favourite among commercial growers in the USA

  • Essential for those growing in softwater areas or in coco

  • Strengthens cell walls for all-round stronger plants

  • Can be applied as a foliar or administered via the substrate

  • Also contains trace minerals, vitamins, amino acids and plant extracts

  • Provides key nutrients needed for the process of photosynthesis

  • Helps with the transportation of other nutrients

  • Delivers great results in any medium or system

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£8.25

Cal-Mag Plus is no ordinary calmag supplement. Not only does it provide a healthy dose of calcium and magnesium (two secondary macronutrients that are missing from soft water), it also contains a blend of trace minerals to ensure that your plants get everything they need for peak growth and development.

  • Botanicare - a firm favourite among commercial growers in the USA
  • Essential for those growing in softwater areas or in coco
  • Strengthens cell walls for all-round stronger plants
  • Can be applied as a foliar or administered via the substrate
  • Also contains trace minerals, vitamins, amino acids and plant extracts
  • Provides key nutrients needed for the process of photosynthesis
  • Helps with the transportation of other nutrients
  • Delivers great results in any medium or system

How Cal-Mag Plus Works

Calcium & magnesium supplements are vital for those growing in soft-water areas, because soft-water is lacking in these secondary macronutrients. It’s also an important addition for growers using coco, because coco releases extra potassium as it degrades, which can cause calcium to become less available to plants. Supplementing with Cal-Mag ensures that your plants get everything they need.

Calcium assists with nutrient transportation, which helps plants to use the other nutrients that you give to them more effectively. It also has an impact that’s quite similar to silicon because it helps to strengthen up cell walls. Magnesium is vital to the process of photosynthesis, forming a key component of chlorophyll, the green pigment that’s responsible for capturing light energy. This energy is then used to create sugars using CO2 from the surrounding air. Low magnesium levels reduce the rates that plants can photosynthesise at, so it pays to get it right!

Unlike many other calcium & magnesium supplements, Cal-Mag Pro also contains a wide array of additional minerals that assist with plant growth, including iron, boron, zinc, manganese, molybdenum, copper, cobalt and iodine. Liebig’s ‘law of the minimum’ states that your plants will always be held back by the nutrient that your plants have the least of in relation to their needs. This is still true for micronutrients that plants need in tiny quantities. Covering your bases with a wide array of trace minerals helps to ensure that you get the very best performance from your plants. Cal-Mag Pro goes even further by including an array of vitamins, amino acids and plant extracts, which make it one of the most comprehensive supplements on the market.

How to Use Cal-Mag Plus

Add Cal-Mag Plus in alongside your other nutrients at a rate of 0.5ml - 1.25ml per litre. See the Botanicare feed charts for more information.

As with all nutrients, boosters and additives, never mix them together in their concentrated form (i.e. straight out of the bottle). Always add each nutrient, booster or additive to your reservoir or feed water in turn, giving the solution a good stir to mix it in before adding the next one.

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