Scuba Diver Magazine Forum 'Diver to Diver' discussion board, with environmental section
http://www.scubadiving.com/forum/tt.aspx?forumid=18
Michigan Reefers a forum for keeping reef aquariums, these guys know water, just ask them? We may require their specialty someday soon.
http://www.michiganreefers.com/
Grist, enough said.
http://gristmill.grist.org/
Newsvine Science
http://www.newsvine.com/science