EH Cal-Mag - 270 Gal. 9 CFM Customizing the blend ratio according

Customizing the blend ratio according to your specific needs allows you to exploit the full potential of these filtration powerhouses

NRE 5L Main Condenser

Use in seed starting mixes as an alternative to vermiculite and perlite

Micro™ is formulated to provide your plants with Nitrogen

EH Cal-Mag - 270 Gal. 9 CFM Customizing the blend ratio accordingGrow 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