Yeast CO2 white fluff

White fluffy stuff has formed in my reactor at the end of the underwater 
CO2 discharge tube. The downward water flow from the powerhead causes it 
to stream downward. Am I happy, sad, or indifferent? 

When searching on <fluffy> in the archive, I saw notes that it might be 
a colorless cyanobacteria feeding on sugar which somehow has made it 
through the airline tubing along with the CO2. My Kribs are almost as 
interested in my new DIY rig as I am.
Jim Curto
Western Springs, Illinois