Short Description:

ARM™ Coarse - Calcium reactors have

evolved into several types that require different media sizes. Because of this we now offer ARM™ Coarse for rapid upflow type reactors that have become so popular and are a large share of reactors on the market. This coarse grade of ARM™ will prevent the clogging and upkeep associated with fine media and these reactors.

Long Description:
Carib Sea Arm Reactor Media Coarse 50lb 50 Pound : A complete reactor media containing not only calcium and carbonate, but essential trace elements as well. In fact ARM has nearly 50 times the strontium of other brands (7390 ppm) ARM is processed for immediate use, no rinsing required, and has double the surface area of regular aragonite. Precision grading (2-3mm) allows for maximum carbon dioxide penetration, and the exclusion of gastrpod shells ensures the lowest phosphate (less than 1/10 of 1 ppm) and silica (about 1/2 that of other brands) content. This grading also carries in the highest concentration of Halimeda incrassata, an aragonite so pure it has been used as a laboratory standard. ARM has the highest solubility of any reactor media available (metastable at 8.2), so CO2 consumption is much lower. ARM, its what yoru corals are made of.Calcium reactors have evolved into several types that require different media sizes. We now offer our original ARM fine for downflow, slow upflow, and fluidized bed type calcium reactors and our ARM coarse for rapid upflow type reactors. No matter the reactor, CaribSea has you covered.