Assertion: marine aquarium | /r/HasProperty | live rock
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Source sentences:
text: Back to an air pump/air stone combination, this can still perform some bio filtration simply by moving current and adding dissolved oxygen (at the surface via gas exchange, not by virtue of the column of bubbles); this current will move water by nitrifying aerobic bacteria clinging to the surface of rocks, décor and in the case of marine aquariums, live rock which, by itself is a very efficient bio filter provided ample water current is provided around the live rock.