EH Cal-Mag - 55 Gal. pest-and-disease-control and extends 7" outward in

and extends 7" outward in each direction

Grow Big Hydroponic contains earthworm castings

or employed in soilless media

You can connect the filter directly to your RO water filter system

Lifetime Warranty on Tanks and Parts*

EH Cal-Mag - 55 Gal. pest-and-disease-control and extends 7" outward inGrow Lush, Green Plants Keep your plants productive and green in any growing medium with Cal Mag, a calcium and magnesium supplement from Emerald Harvest. Emerald Harvest Cal Mag is more than just a calcium magnesium supplement. In contrast to competing products, EH Cal Mag contains kelp extract, a natural source of nitrogen and other helpful compounds, making it different from standard products of its kind. Containing top quality ingredients, Cal Mag