Athena Blended Cal-Mag

Yes, if you are growing in inert media like coco or rockwool, or using reverse osmosis water, your plants likely need the extra calcium, magnesium, and iron this supplement provides. It is designed to be used alongside standard two-part liquid feeding programs to prevent deficiencies without throwing off your overall nutrient balance.

Absolutely. Reverse osmosis water strips out essential minerals, so this formula is engineered to replenish those specific elements—calcium, magnesium, and iron—that your plants need to thrive in that environment.

While it is optimized for inert media like coco and rockwool, it can be used in any growing system where you need to correct or prevent calcium, magnesium, and iron deficiencies. Just ensure you are monitoring your overall nutrient levels, as it is designed to integrate seamlessly into a standard feeding regimen.

The standard application rate is 2.5 mL per gallon of water. Always mix it into your reservoir or nutrient solution according to your specific feeding schedule.

To maintain the integrity of the formula, store the container in a location where the temperature stays between 45° F and 85° F. Keeping it within this range prevents the liquid from degrading or separating.