A Premium carbon that eliminates foul odors, unsightly discoloration and harmful organic substances.
Heat activated bituminous coal based granules are specially sized and won't damage filter impellers.
With Black Diamond, you also get more carbon. As much as 60% of other prewashed carbon weight is water, not carbon. Black Diamond contains less than 2% moisture, and is phosphate free!
Suitable for freshwater and marine use.
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