difference between bubble algae & just bubbles in algae?

[KnightlyBuzz]

Sorry in advance for the newb question, but in my sump I have bubbles in/on my GHA. How can I tell the difference between bubble algae and just regular bubbles on/in my algae?

 

[Biglew11]

Bubbles in algea looks like the bubbles are coming out of the algae. Bubble algea is shaped like bubbles
https://reefbuilders.com/2013/12/23/get-rid-green-bubble-algae-ventricaria-valonia/

 

[mtfish]

Air bubbles look like bubbles. Bubble algae looks like little green marbles (or red if you have red algae).

 

[KnightlyBuzz]

ok, thanks!

 

[footgal]

Bubble algae is hard and tough, shiny too. Unmistakable once you see it.

 

[KnightlyBuzz]

Thanks. Based on what you guys are saying I must just have regular bubbles trapped in my GHA.