I found an article that talks about archea and how it processes ammonia in the oceans. Very interesting read, even if presented for "kids", it was new information to me. Makes me wonder just how many archae may be living in my fish tank...
http://www.sciencenewsforkids.org/2...lions-of-tons-of-poisonous-ammonia-each-year/
http://www.sciencenewsforkids.org/2...lions-of-tons-of-poisonous-ammonia-each-year/