Identify the creatures colonising the glass

[umutsenoglu]

I restarted this aquarium from scratch two months ago because of a problem with green or brown algae.

There are now some creatures with tentacles attached to the glass. They don’t move or react when I touch them. I’m sharing some photos—could you help me identify them, please?

Tank: 110 L
Fish: 1 small cardinalfish
Corals: 1 Favia and a small zoa colony

 

[rayadog]

I could be wrong but it looks like a hair algae that has found a way to settle on the glass.

 

[EnterName]

Just ugly phase algae. Nothing to be worried about for now

 

[saltwaterfish.com Verified Sponsor]

Yup just looks like some hair algae growing on the glass. A fresh razor blade or algae scraper should do the job.