CaribSea ARM Reactor Media Extra Coarse 1gal  3.78L

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

ARMTM Extra Coarse contains:

275200 ppm Calcium

590000 ppm Carbonate

2200 ppm Strontium

2000 ppm Magnesium