Marine Pure - 90g Gems Ceramic Media

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Introducing MarinePure Gems - the high-performance biofilter media for nano tanks! With open porosity and 1,450 in2 of surface area per box, these Gems provide an ideal surface for beneficial bacteria to grow and reduce nutrients, ultimately lowering tank maintenance. Stable and inert, they can be placed almost anywhere in your tank. Each box contains 90g (3.2oz) of Gems, perfect for tanks up to 70 gallons. Rinse and place them in your preferred filter, and see results in just a few weeks!


MarinePure High Performance Biofilter Media Gems - 90 gram box

MarinePure`s bio-media is the most technically advanced bio-media available today, designed to be a substrate for bio-filtration, specifically targeting ammonia and nitrite removal, minimizing denitrification.


MarinePure is the perfect place for beneficial bacteria to flourish in order to remove harmful fish wastes, eliminating ammonia and lower nitrates.


Thin Bio-Film Technology


Combination of vast surface area and open/interconnected pores allow a thin bio-film to develop. This thin film allows bacteria to flourish because necessary nutrients are immediately available. With the open pores, old dead bio-film is easily flushed from the media and will not plug the media. Water flows through the media, not around as with other denser medias, thus utilizing the most surface area for beneficial bacterial growth.


  • Thin Bio-Film Technology™
  • For freshwater and marine aquaria
  • Vast surface area
  • Open porosity
  • Designed for ammonia and nitrite removal
  • MarinePure is inert and will not harm aquarium inhabitants
  • Reduces tank maintenance
  • Allows a higher bioload
  • Fits into most filters
  • Use in sumps, under gravel, canister filters, etc.

5 Star Reviews


I have been ordering Copepods for many years and I never notice any reaction from my fish or corals when I bought from other places not so buying from Pod Your Reef! The copepods were alive and well! You could even see some swimming around in the tank my mushroom corals went crazy! Highly recommend getting your copepods from here!

Nicholas B.