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Pairs well with
🧱 Green Planet Pro Cal – Heavy-Duty Calcium & Magnesium Support
Pro Cal is Green Planet’s go-to cal-mag supplement—crafted for growers who demand strong structure, lush growth, and improved nutrient uptake from veg to bloom. Whether you're in coco, soil, or hydro, this high-performance additive is essential for building thicker stems, stronger leaves, and bigger, healthier buds.
Formulated with fully chelated calcium, magnesium, and iron, Pro Cal enhances plant strength, supports enzyme function, and helps prevent common deficiencies that slow growth and limit yield.
đź’Ş What It Does:
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Strengthens Cell Walls: For sturdier stems and increased nutrient transport
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Delivers Magnesium & Iron: Critical for chlorophyll production and photosynthesis
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Boosts Enzyme Function: Fuels essential growth processes at every stage
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Coco Safe: Ideal for coco-based growers with higher calcium demands
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Reliable Performance: A powerful, consistent formula trusted by commercial growers
🌿 Why Growers Choose Pro Cal:
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Noticeable Size Gains: Improved structure and resilience leads to better growth and bigger yields
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Full-Cycle Support: Use from veg to bloom (stop before flush week)
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Fully Chelated: Ensures maximum absorption and zero lockout
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Prevents Deficiencies: No more yellowing leaves or weak growth in demanding systems
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Pairs Perfectly with GP3 and Dual Fuel
đź“‹ How to Use:
Use at 1.25 mL per litre from early veg until one week prior to harvest. Suitable for all systems—soil, coco, or hydro.
🧠The Grow Guys Tip:
Using coco? Pro Cal isn’t optional—it’s a must. Keep your plants topped up and strong with consistent cal-mag all cycle long.