Spongy type algae - Need help identifying

[MNSPS]

Hi. I have this algae covering all of my rocks that has a spongy type texture. It's brown and green in color. I have attached a picture below. I"m having difficulty trying to identify what it is and if there are any type of algae eaters I could use to control it. Please see attached picture. Any ideas?

 

[Dan_P]

Hi. I have this algae covering all of my rocks that has a spongy type texture. It's brown and green in color. I have attached a picture below. I"m having difficulty trying to identify what it is and if there are any type of algae eaters I could use to control it. Please see attached picture. Any ideas?

It looks like sponge (white cob web structure) overgrowing green algae (green mounds under the cob webs).

 

[mcarroll]

Any chance you can get a closeup?

Any chance of microscope pics?

Are there bubbles in it?