Online ordering available february 2024

February 9, 2024


SKU: AP80020


Aptus MINERAL-CALMAG is a 100% water-soluble additive containing necessary plant-available forms of nitrogen, calcium and magnesium.

This formulation has been designed to prevent common deficiencies while buffering your feed water when growing in soil-less mediums such as coco, perlite, rockwool, hydroton or recirculating systems and/or using filtered sources of water. MINERAL-CALMAG can be used throughout the entirety of the vegetative and flowering stages of growth.

MINERAL-CALMAG has excellent pH stabilizing capabilities and is the calmag of choice for commercial growers or any cultivator operating fertigation systems, recirculating systems or longer reservoirs.


With a 2-part NPK
1.5 ml per 1 gallon

With BASE & municipal water
2.5 ml per 1 gallon

With BASE and RO/Soft water
3 – 4 ml per 1 gallon

With a 2-part NPK
0.4 ml per 1L

With BASE & municipal water
0.6 ml per 1L

With BASE and RO/Soft water
0.8 – 1 ml per 1L

Additional information

Weight 57.2000000000000000 lbs
Dimensions 9.7500000000000000 × 11.5000000000000000 × 15.5000000000000000 in