Related terms:
nitrogen fixation
biological loading
fish length per
metabolize
nitrogen waste
marine aquaria
simulating
denitrification
marine aquarium
tropical fish
fishkeeping
aquarists
coldwater
dinitrogen
brackish water
aquaria
saltwater
nitrite
prokaryotes
protozoa
archaea
goldfish
nitrate
ammonium
ammonia
nitrogen
Wikipedia sources:
Fishkeeping
Aquarium
Nitrogen cycle
Nitrification
Soil life
Nitrogen fixation
Filter (aquarium)
Microorganism
Archaea
Context for words:
nitrogen
cycle
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