CaribSea ARM media 3.8L

With the highest solubility of any reactor media available (metastable at 8.2) it's typical CO2 consumption is much lower.

Contains:
381000 ppm Calcium, 590000 ppm Carbonate, 7390 ppm Strontium, 1050 ppm Magnesium, 56 ppm Potassium.
About 69 pounds per cubic foot
1 gal (00525), 50 lb (00555)

ARM™ EXTRA COARSE

A high magnesium reactor media. ARM™ Extra Coarse is still a complete reactor media containing not only calcium and carbonate, but essential trace elements as well.

Contains:
416000 ppm Calcium, 577000 ppm Carbonate, 3300 ppm Strontium, 1400 ppm Magnesium, 56 ppm Potassium.
About 70 pounds per cubic foot
1 gal (00531), 50 lb (00551)