Would someone who's good at distinguishing different kinds of algae please take a look at these two photos and let me know off-list what this is? My Otos and Florida Flag Fish don't seem interested in it. Thanks. http://www.fitchfamily.com/Algae1.jpg http://www.fitchfamily.com/Algae2.jpg John T. Fitch E-mail: jtfitch at spamcop_net Web Site: www.fitchfamily.com/aquarium.html