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post #31 of (permalink) Old 11-21-2013, 04:13 PM
Planted Tank Guru
Join Date: Jan 2006
Location: Charlton, Mass
Posts: 4,901
Originally Posted by Aplomado View Post
Thanks... what is the "matrix"?
Sachem matrix. Its a bio media.
People use often to cover UGF pipes and such.

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