orange algae

Established tank, about 13 months old. Started getting orange film on just one rock. Film is hard to remove. What is this and how I get it under control.

Hi All, I noticed this morning a very small patch of what I am guessing is a type of algae or cyano that is a vibrant orange under my blue lights. I just finished a round of chemi-clean early last week (~9 days ago) to wipe of the regular maroon colored cyano. The treatment worked as all of...

Hi, my sump, my skimmer, filter socks and even chaeto is covered with what seems like some film aglea, (diatom, cyano?) It's rust colors. Been like that for 2 weeks and it's only in the sump, DT is clean. Any help is welcome. Thanks!

Hi everyone, I have 20 gallon AIO with a media caddy. The media bags of carbon and GFO started growing this orange substance. I replaced the media and it grew again. Does anyone know what it is or have a guess?