Fox Farm Cal Mag 1 Gallon

Calcium and magnesium help strengthen cell walls and aid in fruit development, helping you avoid the costly and frustrating deficiencies that cause these problems.
Increase plant tissue development, flower & fruit sets, as well overall growth rate of your crops.
OMRI Listed® and CDFA Registered for Organic Gardening.
NPK: 1 - 0 - 0
3% Calcium 0.9% Magnesium