Emerald Harvest Cal-Mag 55 Gallon Container Size:15 Gallon Lack of Magnesium results in

Lack of Magnesium results in stunted growth

When you select the width and length of your system at the top

At Advanced Nutrients

By maximizing the concentration of dissolved oxygen

Replacement Twister T4 Nitrided Helix Blade with Nuts

Emerald Harvest Cal-Mag 55 Gallon Container Size:15 Gallon Lack of Magnesium results inEmerald Harvest Cal Mag keeps your plants productive and green in any growing medium with our top quality calcium magnesium supplement. Keep your plants productive and green with Cal Mag, a calcium and 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 abundant flowering and a heavy yield by utilizing its 2 0 0 NPK.