MarinePure GEMs: Smaller Version of the Popular Ceramic Media

17 Aug, 2018

MarinePure™ GEMs are a smaller, versatile addition to the popular line of ceramic biological filtration media.

MarinePure™ GEMs are a smaller, more versatile addition to the popular line of ceramic biological filtration media.

via CerMedia

CerMedia is pleased to announce the release of our newest product to the MarinePure family, MarinePure™ GEMs.

The MarinePure GEM is a ¾” diameter part that will be the perfect biological media for canister filters. It also fits in hang-on-the-back filters and other nano-tank systems. One package has enough media to support an aquarium of up to 70 gallons (each MarinePure GEM has 2 square meters [21.5 square feet] of surface area). The GEMs have the same porosity as our popular MarinePure SPHERES. Their unique combination open-flow porosity and high surface area means one 3.2 oz box of these little beauties is packed with over 1,450 square feet (135 square meters) of accessible surface area. They will be the perfect solution for ammonia and nitrite elimination, and most users will also see better control of nitrates.

What is MarinePure?

MarinePure is designed to be a substrate for bio-filtration, specifically to target ammonia and nitrite removal (nitrification) and to minimize nitrates (denitrification). MarinePure is suitable for both freshwater and saltwater (marine) environments. MarinePure can be used fully submerged or in trickle/shower filters. It should not be used in moving bed filters. Product specifications include:

  • Lightweight: Bulk Density = 0.3-0.5 g/cc
  • High Surface Area: 1.3-1.7 m2/g
  • Open Pore Structure: 80-90% Open Porosity
  • Chemically Inert
  • Hydrophilic: Absorbs water and stays wet longer
  • Low Pressure Drop
  • Unaffected by Ozone


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About the author

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Matt Pedersen

Matt Pedersen is a Sr. Editor and Associate Publisher with Reef To Rainforest Media, LLC & CORAL Magazines, and is a Sr. Editor and Publishing Partner with Aquatic Media Press, LLC & AMAZONAS Magazine. Matt has kept aquariums for 38 years, has worked in most facets of the aquarium trade, is an active aquarist and fish breeder (both marine and freshwater), and was recognized with the 2009 MASNA Award as the MASNA Aquarist of the Year.

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