Originally Posted by chefbill
I may have the details wrong but the difference between live rock and bio balls is this. My eyeballs do an awesome job of controlling ammonia. However they do not have an anaerobic area so the cycle ends there. Live rock takes care of the entire nitrogen cycle. You will often hear bio balls referred to as a nitrate sink or trap
Yes, I have heard people refer to them as that.
Would there be anything else I could do to reduce nitrates even more?
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