Tropical Fish Word of the Day: Beneficial bacteria

Expand your tropical fish vocabulary with the FishChannel.com Tropical Fish Word of the Day.

Beneficial bacteria: (n.) Beneficial bacteria present in aquariums metabolize dissolved organic compounds (fish food, fish waste, decaying plant leaves, etc.). The bacteria convert ammonia (which is deadly to fish) into nitrites, then into nitrates. Plants absorb nitrates, and nitrates are removed during water changes.

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