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Unread 05/27/2005, 01:02 AM   #23
emora
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Join Date: Sep 2004
Location: Madrid, Spain (originally from Seattle, WA)
Posts: 161
The argument surrounding anoxic metabolism is because nitrogen is consumed and hydrogen or rather hydrogen sulfide is produced. Some people are scared that one day the hydrogen sulfide will somehow escape and kill everything.

I had the opportunity to move a tank with an old established dsb with plenty of dark pockets and other purported nasty things. People had scared the dickens out of me saying it would be a catastrophe, that the system was a time bomb, and lots of other unfounded opinions. I found no rotten egg smell and suffered no deaths. Amonium, Nitrite and Nitrate levels were undetectable immediatly after the move and over the next weeks.

This direct experience motivated me to read everything I could about DSBs and the metabolic processes that take place in them. All I found was a lot of myths about bad things in DSBs and A LOT of sound science in their favour.


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