What are these bubbles?

[Dom]

I'm not quite sure how to describe them. They almost look like tiny helium balloons attached to a thread of algae. When they break off, they stubbornly float at the surface and never break. They also seem to do a good job avoiding the overflow.

I clean them off, but they are back in a matter of hours.

Can someone tell me what this is?

Thank you,
Dom

 

[PotatoPig]

Are either your phosphates or nitrates in the tank at, or have recently been at, 0?

 

[Dom]

Are either your phosphates or nitrates in the tank at, or have recently been at, 0?

No, they have not.

 

[PotatoPig]

No, they have not.

Might not be Dinos then

If not a candidate is Calothrix - it presents very similar. If so IMO it’s “mostly harmless” and Astrea snails make short work of it, at least in my experience.

 

[Dom]

Might not be Dinos then

If not a candidate is Calothrix - it presents very similar. If so IMO it’s “mostly harmless” and Astrea snails make short work of it, at least in my experience.

I've read Calothrix is a cyanobacteria, and I do have patches of red Cyanobacteria around the tank at the moment. But it is fading away over the last week.

Odd; it appears and if I wait it out long enough, it fades away.

 

[isaacfish]

Those are definitely Dino algae Also look no of bubble algae in your tank they usually come as pairs

 

[Readywriter]

When ever Ive seen dinos make that many bubbles it was a thick mat of dinos. What you going on doesnt really look like a tremendous accumulation of stuff. So id say uncertain but maybe something else.