Emerald Harvest Cal-Mag 2.5 Gal-9.46 L iPower Signature Grow Tent Our best selling fertilizer

Our best selling fertilizer

This pump is designed to be installed before the Stealth RO to boost the inlet pressure

Pre-measured scoop for a 25 gallon reservoir makes feeding easy

Warning: For commercial use only in unoccupied areas

Designed to automatically start and stop the pump when taps are open or closed

Emerald Harvest Cal-Mag 2.5 Gal-9.46 L iPower Signature Grow Tent Our best selling fertilizerKeep 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