Cronk CalMag 2-0-0 | Calcium Magnesium Iron Supplement 1000L

Product Overview

CalMag 2-0-0is a concentrated calcium and magnesium supplement with chelated iron that prevents the most common nutrient deficiencies in modern cultivation. Essential for coco coir growers, RO water users, and LED grows where calcium and magnesium demand increases significantly beyond what base nutrients provide.

Calcium deficiency causes brown spots and weak cell walls. Magnesium deficiency causes yellowing between leaf veins. Both are widespread in coco coir (which strips Cal-Mag from solution), RO water systems (which lack natural minerals), and under LED lighting (which increases metabolic demand). CalMag prevents these issues with chelated minerals that remain plant-available across pH ranges 4.0-6.5.

Key Benefits

• Chelated calcium strengthens cell walls and supports nutrient transport

• Chelated magnesium maintains chlorophyll production and photosynthetic capacity

• EDTA-chelated iron prevents yellowing and supports energy production

• 2% nitrogen supports healthy leaf development during supplementation

When Do You Need CalMag?

• Growing in coco coir (coco binds calcium and magnesium)

• Using RO or soft water (lacks natural minerals)

• Growing under LED lighting (increases Cal-Mag demand)

• Seeing brown spots or interveinal yellowing