Pro Cal is the ultimate in calcium magnesium supplementation and should be used on a regular basis with your Green Planet nutrient program. Pro Cal is used throughout the vegetative and flowering stages and ceasing use in the last week of the flowering stage which is usually a flush week incorporating REZIN and water.

Key Points:

Thickens cell walls 

Helps form calcium pectate

Improved enzyme function

Fully chelated iron

Coco coir approved

Important source of magnesium

Powerful formulation