ARM™ - A complete reactor media containing not only calcium and carbonate, but essential trace elements as well. In fact, A.R.M.™ has nearly 50 times the strontium of other brands (7390 ppm). A.R.M.™ 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 gastropod shells insures the lowest phosphate (less than 1/10 of 1 ppm) content. This grading also carries in the highest concentration of Halimeda incrassata, an aragonite so pure it has been used as a laboratory standard. A.R.M.™ has the highest solubility of any reactor media available (metastable at 8.2) so typical CO2 consumption is much lower.
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