Emerald Harvest - Cal Mag Size:9.46L Delivers the best results when

Delivers the best results when used alongside the rest of the Oldtimer range

The tray requires an AQUAvalve (not included) and fittings (including a 9mm top hat grommet) in order to function as part of an AutoPot Watering System

healthy growth and high quality yields

One of the most important functions of GPF is its ability to transport vita yield enhancers and nutrients to where they are needed most

Emerald Harvest - Cal Mag Size:9.46L Delivers the best results whenKeep your plants productive and green with Cal Mag, Emerald harvests Calcium Magnesium supplement. Cal Mag helps regulate plant growth and productivity and ensures essential chlorophyll levels when growing in coco, soil as well as other media. Cal Mag is 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