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Only CaribSea’s Arag-Alive
just use it like a toothpaste tube
Includes ball valve for regulating flow
modern design ensures a beautiful and cohesive setup that won't disrupt the look of your aquarium
CaribSea A.R.M. Calcium Reactor Media 1 Gal (Coarse) accessories Only CaribSea’s Arag-AliveA 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 3 mm) allows for maximum carbon dioxide penetration, and the exclusion of gastropod shells insures the lowest phosphate (less than 1