Athena Cal-Mag Classic 5 Gallon

Athena Cal-Mag Classic is a specialized, sediment-free liquid nutrient supplement (2-0-0 NPK) designed to correct calcium, magnesium, iron, and nitrogen deficiencies. It is ideal for reverse osmosis (RO) water and inert media (coco/rockwool) to support robust cell wall structure and intense growth during all plant stages.