Interesting comparison

[IanWR]

I remember seeing this when I was in the midst of research for setting up my first tank. Was interesting then, even more so now that I have a year and a half experience with my tank. It seems to offer compelling evidence for the benefit of running a macro fuge.

As an experiment, I wish that they had done some more isolation between the tanks. The 2 tanks in the middle get more light than the 2 on the ends.