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OPTICAL MG 2.3-0-0 is a powerful calcium and magnesium supplement with iron. It is formulated to make calcium and magnesium readily available to maturing plants during the critical bud, flower and fruit development phase. Simply add OptiCal-Mg to your regular feeding program to optimize your plant’s growth potential. Create bigger, heavier, and more fragrant flowers and fruit. Stimulate the production of essential oils. Invigorate the overall health and development of root systems and plant structures.

If calcium or magnesium deficiencies should occur, such as blossom end rot or arrested plant development, use OptiCal-Mg to correct the problem at any time during a plant’s lifecycle to restore your plant’s overall health and vitality.

So whether you want to enhance plant performance or nip a deficiency problem in the bud, OptiCal-Mg offers the right solution.

Designed for use with all quality plant fertilizers such as Optimum Hydroponix 2-part nutrients for hydroponics and soil or Mo’Koko 2-part nutrients for growing in coco.

Optimum Hydroponix Optical-Mg (2.3-0-0)

C$19.99 Regular Price
C$14.99Sale Price
  • Shake well before use.

    Hydroponics: Add 1.5mL – 2mL of OptiCal-Mg per liter of nutrient solution at each change of nutrient solution when topping up the water level in a reservoir. This will add 50-70 ppm of calcium to a nutrient solution.

    Coco/Soil: Add 1mL – 1.5mL of Optical-Mg per liter of nutrient solution.

    Nutrient deficiencies: Use to correct calcium and magnesium deficiencies in plants as well as related physiological disorders. Add 2mL – 2.5mL of Optical-Mg per liter of nutrient solution.

    Note: When using Optical-Mg to a nutrient solution with added flowering boosters that are high in potassium such as sonic boost, use the higher recommended application rates noted in the directions above.