CaribSea A.R.M. Reactor Media Extra Coarse 1 Gallon 00531 CaribSea A.R.M. Aragonite Reactor Media with Essential Trace Elements Extra Coarse 1 Gallon Customer Rating  N/A Add Review Ask Question $41.95 Qty : SPECIAL ORDER ITEM Please email us to get an estimated delivery time. < > Product Description Reviews (0) (View All) Questions (View All) CaribSea A.R.M. Aragonite Reactor Media is a complete reactor media containing not only calcium and carbonate, but essential trace elements as well. CaribSea A.R.M. Extra Coarse is a high magnesium reactor media. It also contains 275200 ppm calcium, 590000 ppm carbonate, 2200 ppm strontium, and 2000 ppm magnesium. Features: Highest solubility of any reactor media Lower CO2 consumption No phosphates or silicates Graded and processed for immediate use, no rinsing required 1 Gallon Add Review There are no reviews for this product. Ask Question There are no questions asked for this product. Ok