Description
Humboldt County’s Own Magnum is a premium calcium and magnesium supplement that supplies readily available calcium and magnesium to fast-growing plants, along with iron and other essential trace elements.
It supports strong cell walls, nutrient transport, and chlorophyll production, and is useful when using reverse osmosis water or coco coir.
Use at 2-5 ml per gallon throughout the grow cycle.
Derived from calcium chloride, magnesium sulfate, and iron EDTA.
This is the 32oz size; also available in 1gal, 2.5gal, and 5gal.
