Emerald Harvest Cal-Mag - 3.79L Set of 2 up to and including the

up to and including the flush

economical ocean derived nutrient source available

When the room temperature is up to or above 20°C

Uniquely amongst leading brands

Emerald Harvest Cal-Mag - 3.79L Set of 2 up to and including theKeep your plants thriving with Cal Mag, a high quality calcium magnesium supplement from Emerald Harvest. Formulated with high quality ingredients, Cal Mag provides the extra calcium and magnesium needed to support vigorous flowering and heavy yields. It's particularly beneficial for media like coco coir, but any garden can reap its advantages. Cal Mag strengthens plants and helps correct nutrient deficiencies commonly found in various growing media.