Emerald Harvest Cal-Mag 2.5 Gal-9.46 L Grow Plugs It also contains trace elements

It also contains trace elements such as chelated iron

6400 K/ 54 watt energy efficient T5 bulbs

brass water shut-off valve

All you need to provide is a gas source

Emerald Harvest Cal-Mag 2.5 Gal-9.46 L Grow Plugs It also contains trace elementsKeep your plants productive and green with Cal Mag, a calcium and magnesium supplement from Emerald Harvest'R. 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. Use Cal Mag as a supplement to a base nutrient series for