The great Oxygen debate

Lack of oxygen in the Long Island Sound is increasing.  That is bad news, but it gets worse, the algae and nitrogens everyone blamed, are also decreasing.
The EPA had a large research boat in Long Island Sound several months ago, everyone is still waiting for the results.
The results have not been released because they do not know what to make of them.
Things are not what they expected.
Check the iron out guys, check what has happened to the iron.
That horrible black sludge loaded with sulfides, iron sulfides, gobble up oxygen like a hungry Pac man.
The oxidation process uses lots of oxygen.
The anaerobic conditions create the sulfides and the sulfides maintain them.
This is not a good situation.