GP Pro-Cal

Correct Cal-Mag Deficiencies Before They Cost You Yield

Green Planet Pro Cal is a premium calcium, magnesium and iron supplement that prevents and corrects the deficiencies that plague hydroponics, coco and soil - especially on reverse osmosis (RO), soft water or coco coir, where calcium and magnesium sit too low for healthy development. Pro Cal drives strong roots, efficient nutrient uptake and vigorous growth through both vegetative growth and flowering, helping plants hit their full yield potential.

Key Benefits

• Cal-Mag plus iron: readily available calcium, magnesium and chelated iron
• Deficiency fix: prevents and corrects common Cal-Mag shortfalls
• Stronger structure: supports root development and stronger cell walls
• Better uptake: improves nutrient absorption and overall plant health
• Fewer disorders: reduces blossom-end issues, leaf spotting and weak new growth
• Broadly compatible: suits hydro, coco and soil and most nutrient programmes across the cycle

Twisted new growth, brown spots or weak stems?

Calcium and magnesium deficiencies show as slow growth, twisted new leaves, brown spots, weak stems and reduced yields - most common in coco and on RO or rainwater. Pro Cal supplies readily available calcium and magnesium plus chelated iron and micronutrients, building stronger roots, healthier foliage and improved uptake for more vigorous veg, better flowering and denser, higher-quality harvests.

How to Use

• Shake well before use.
• Fill your reservoir or watering can with fresh water.
• Add Green Planet Pro Cal at 1.25 ml per litre of water.
• Mix thoroughly before adding other additives.
• Adjust pH if required.
• Use with every feed through veg and flower.
• Discontinue about one week before harvest if flushing.