Quote:
Originally Posted by driftwoodhunter
Now that I know it's only pumice stone, I'm going to be on the hunt for that at the home improvement/pond/farm stores...
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Matrix is a man made expanded media and not pumice.
Quote:
Originally Posted by Darkblade48
How is this media achieving localized anaerobic spots within a filter with so much water movement?
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It doesn't
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