the caco3reef stuff i think its a bit different, mine says .8 not 1.3. Might just be the size. The .8 is really really really small, you need a BRS reactor or something similar.
I was filling the BRS reactor with the kent carbon and I followed the instructions for this ROX and only put 1.5 cups of it into the reactor. I probably put about 6 cups of the other carbon into the BRS reactor so it must be much more efficient.
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