[Myka]

Oh man, don't ever get me started on this! Do a search for the keywords "bubble algae" and threads started by user "Myka". There is no cut and dry answer to your dilemma. An interesting thing to note is that in ZeoVit tanks the last algae to disappear is always valonia, which goes to show that it can survive on very little nutrients. In my 33g tank I have two Emerald Crabs, and I don't think they have done a thing to the bubble algae. I also went as far as putting a 1 1/2" Kole Tang in my tank (march thee Tang Police!!!) which is known to eat algaes. I don't think he has done anything either, even though he picks at the rocks a lot. I was religiously manually removing valonia on weekly waterchanges, and it was always coming back. I even cooked the rock for 9 weeks (if I remember correctly), and it still came back. Honestly, I have given up. Manual removal seems to be the only thing that really makes any difference at all.