Stop Yellowing Leaves Before They Cost You Yield Monkey Nutrients Mag Cal is a calcium and magnesium supplement built to head off the deficiencies that slow growth and weaken plant structure. It supplies a readily available source of both elements so plants keep building strong tissue, absorbing nutrients efficiently and developing steadily through the cycle. Calcium and magnesium are especially important in coco-based systems, where they deplete faster than in soil. Key Benefits Readily available calcium and magnesium for fast correction Prevents deficiency problems common in coco and hydroponics Strong cell structure and healthy plant development Improved nutrient uptake and overall plant health Stable veg and flowering performance All media: suits hydroponics, coco and soil Fixing yellowing leaves and weak growth from Cal-Mag deficiency? Calcium and magnesium deficiencies are common indoors, especially with coco or purified water. Left unchecked they show as yellowing leaves, weak growth and poor nutrient uptake, chipping away at vigour and eventual yield. Mag Cal keeps both elements available so plants grow without restriction, supporting strong vegetative growth and healthy flower development in hydroponic systems, coco or soil. How to Use Dose: 0.5-1ml per litre of water added to your nutrient solution Method: shake well, mix thoroughly before adding other nutrients Timing: use during vegetative growth and early flowering as needed All media: suitable for hydroponics, coco and soil Feed Chart Monkey Nutrients Mag Cal · hydroponics, coco and soil Stage Per 1 L Per 10 L Vegetative growth and early flowering, as needed 0.5–1 ml 5–10 ml Note — Shake well and mix thoroughly into the water before adding other nutrients. Check pH and EC after mixing.