My Anubias have Brown Spotting on Them

[WeepingCrown]

Hello, so I've had these plants in this tank for a couple months now and I've recently just noticed that there are some browning spots on them that won't go away. I dose them with the recommended amount of Excel, Iron, Potassium supplements and there is decent medium strength LED lighting. I looked like algae growth at first but I'm not completely sure what it is. I normally never had this problem until I stocked my tank with gourami's and angelfish. My shrimp are scared to come out during the day so they normally feed at night. Is it algae or is my anubias plants dying? Here are some pictures of my Anubias Plants. Do I need to cut these leaves off or is there a way to save them?

 

[Angelfish owner]

No, it just looks like typical brown algae to me. I get it all the time. Ototcinclus with take care of that right away.

 

[charliebankston]

Looks like algae to me also. Will it wipe off? If so it's not in the plant structure, just surface algae