Arm ™ Extra Gros

A highly content reactor medium. Arm ™ Extra Corse is always a complete reactor medium containing not only calcium and carbonate, but also essential trace elements.

Contains:
416000 ppm of calcium, 577000 ppm of carbonate, 3300 ppm of strontium, 1400 ppm of magnesium, 56 ppm of potassium.
About 70 pounds per foot cube
1 gal (00531), 50 lb (00551)