What are these clear bubbles?

[KrustyKrab305]

A few of my rocks have these small clear bubbles sitting on them. Does anyone know what could be causing this?

I can use my Turkey baster to blast them but they come back within a few days.

Thank you in advance.

 

[road_runner]

Do you see brown or red film under these bubbles? Or are they just bubbles on the rocks?

 

[lapin]

Could be a few things, hard to tell in your blue picture.
Here is 2 of them
Micro bubbles collecting on the rock and getting trapped in film algae.
Algae releasing gasses.

 

[Softhammer]

Algae/ bacteria releasing gasses. Normal occurrence, also a tell tale that you could use some more water flow.

 

[KrustyKrab305]

Algae/ bacteria releasing gasses. Normal occurrence, also a tell tale that you could use some more water flow.

Thank you. I will increase my icecap gyre flow and see if that helps.

 

[KrustyKrab305]

Could be a few things, hard to tell in your blue picture.
Here is 2 of them
Micro bubbles collecting on the rock and getting trapped in film algae.
Algae releasing gasses.

Thank you.

 

[KrustyKrab305]

Do you see brown or red film under these bubbles? Or are they just bubbles on the rocks?

Just bubbles on the rocks. No other signs of algae. I do have some green bubble algae but on other rocks.