Emerald Harvest Cal-Mag Size:3.79L Fill your main pot with

Fill your main pot with the correct volume of soil

Organics additives: The Organics range includes high quality Organic additives to fine tune and enhance your grow

superior PAR watts

Potassium is often referred to as the ‘quality element’

Dynamic Wide Reflector – E40 or DE

Emerald Harvest Cal-Mag Size:3.79L Fill your main pot withKeep your plants productive and green with Cal Mag, a calcium magnesium supplement from Emerald Harvest. Containing top quality ingredients, Cal Mag is designed to nourish crops with extra calcium and magnesium and create the right conditions for abundant flowering and a heavy yield. This is especially important when growing in some media, such as coco coir, but any garden can benefit. See the guaranteed analysis below for more information. Growers