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Bionova MgO 10 Magnesium Mineral Additive

Starting at $24.95

Bionova MgO 10 is a food grade mineral additive containing 10% magnesium. Magnesium is essential to the process of photosynthesis.

This additive should be applied when deficiencies occur and/or to stabilize RO water for irrigation.

Magnesium in MgO 10 forms the reactive nuclei in the chlorophyll, which converts light energy into chemical energy. Mg deficiency is often seen in cultivations irrigated with RO water or when cultivating under LEDs.

A deficiency of magnesium manifests as chlorosis (slight decoloration) between the veins of older leaves.

An excess of magnesium results in an ill-growing crop and smaller leaves.

Suitable for cultivation methods:

Recommended Dosage:

Application in Irrigation
IN the case of Mg deficiencies add 1-3 ml per gallon of water.
When using Reverse Osmosis Water add 2-6 ml per gallon of water.
A dosage of 1:1000 increases the amount of Ca by 2 mmol.

Application as foliar spray
2-4 ml per gallon of water

MgO 10 can be used with all Bionova products and can be applied as a soil drench/irrigation or foliar spray.


  • When plants present generalized chlorosis on leaves and flowers with subsequent dried leafs, magnesium (Mg) alone is not enough to guarantee high levels of chlorophyll. Consequently, photosynthesis slows down until the leaves die. The symptoms on flowers are recognizable due to the smaller size and lighter colors. To cure the deficiency apply Bionova MgO 10 to the root or leaf to help plants quickly recover from the nutritional shortage.
  • To produce healthy seeds after pollination, increase the dosage of MgO 10 together with Ca 15. Both products contain nitrogen which helps support sufficient nutrient uptake.
  • Mono-nutrients can be used for outdoor growing. After checking the soil and (irrigation) water, Bionova mono-nutrients should be used to adjust the nutrition elements to guarantee adequate amounts of available nutrients.


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