Algae? What is it?

[Sidman24]

What is this stuff on my cichlid stones? There is a little on the glass too I think. What's causing it? It's a planted aquarium.

 

[flitabout]

It looks like brown algae. How long has it been set up?

 

[Sidman24]

I would say a good 2 months. Adding plants as I go along.

 

[NadiaG]

I have a pretty new tank too, 3 months or so and I have the same problem. Looks very alike to yours. People say it is diatoms - brown algae and it will go away on its own. I have noticed in my tank, it stopped growing, still have some but no new signs.
Make sure you don't run the lights for too long

 

[ArtistGardener]

Yes, it is diatoms for sure (also called brown algae). It usually goes away on its own in a month or so. Otos love it, but I wouldn't add any until your tank is a bit more mature. Rams horn snails (and others) also eat it.