Randy Holmes-Farley
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My Tank Thread
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May be wrong but autotroph need inorganic carbon to do they’re processing I don’t believe nitrifying bacteria need that. May be wrong
There's no shortage of inorganic carbon in a reef tank, unless folks let the alk get too low.
FWIW, when I've set up qt tanks for fish, I often added macroalgae as part of the ammonia removal capability. No need to focus on bacteria alone.