Looking for an ID oh these bubbles

[nzkiwi80]

It looks like it’s on GHA or another algea, as seen on the rock. It’s not always on other algea?

 

[Timfish]

Air bubbles, thin films of cyano will make them. I'd just use straws to carefully siphon out the cyano.

 

[nzkiwi80]

So you think cyano is the issue?

 

[anthonygf]

Make this 1/4" stainless steel straw sealed inside a 1/2" hose with a rubber band and carefully suck out the bubbles and algae. You can use this on many pests without spores getting released into the water column.

 

[anthonygf]

So you think cyano is the issue?

Will need your water parameters to help you further.