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ARM™ is a complete reactor media containing not only calcium and carbonate, but essential trace elements as well. 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.

This is a 1 gallon container.