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Ammonia, Nitrite and Nitrate Removal
Primarily designed to provide deep anaerobic zones for de-nitrification in passive systems.
Live rock substitute-popular among reef hobbyists as a substitute for live rock because it reduces nitrates more efficiently without harming the environment.
Use in sumps, stacked in extra-large filters.
CerMedia
CerMedia MarinePure BioFilter Media Block 8"x8"x4"
$69.94
Available