Bubbles on Chaeto: Pearling or Cyano?

[Siberwulf]

I've been trying to figure out why there are bubbles on my Chaeto. I'm running a Triton setup, so there's a very large flow through the sump. So much that I had to secure my Chaeto and spread it out (PS It loves it, looks like!). It's getting about 12 hours a day of AI Fuge goodness at 100%, so it's growing like crazy.

This is a relatively new tank, just finished cyling. Am I dealing with Cyano or am I looking at healthy Chaeto. I do know I have some LHA, and just introduced a CUC in my sump (3 blue leg hermits for the LR and 1 turbo snail for the glass... he's doing a champ job though!

 

[Aldrinlights]

That appears to just be air which is trapped on the bottom side. Micro bubbles of air will combine over time and give you something that appear like that to me.