Algae ID

[rtoris288]

Algae ID? Has slowly gotten thicker over about a week. Has some air bubbles both on and inside of it as well.

 

[flchamp89]

Has a cyno look to it. Does it blow off rocks or come off the sand in like a mat?

 

[rtoris288]

That's the only patch of it in the tank. I went ahead and removed it manually with a toohbrush during a water change.

 

[Bret Brinkmann]

Looks like cyanobacteria to me too. I usually get it when some of the fish food goes uneaten. I heard sulfur drives it's growth, usually from food.