77a8cecc_Reefkeeping_Acronyms__STANDS_FOR
[ACRONYM] NO2, NO2 [WHAT IT IS] Compound composed of Nitrogen (N) and 2 Hydrogen (H) atoms. What Ammonia is converted to by nitrogen-fixing bacteria in fresh and marine aquariums. Toxic to fish [STANDS FOR] 
Nitrite
Reefkeeping Acronyms
STANDS FOR