Continuum Aquatics Exxodus PhosphyxExxodusPhosphyx is an extremely porous filtration medium designed to be used in all aquariums and aquatic systems for chemical filtration (phosphate & silicate removal) as well as bio filtration. It literally has the highest surface area of any filtration medium in the world, by far, yet it provides excellent flow characteristics! Each liter of ExxodusPhosphyx provides over 26,000 square feet of surface area internally for bacterial colonization and
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