Any Idea?

[Existence295]

Just noticed these tube like creatures with fans at the end of them. Doesn’t look like aiptasia.

 

[Spare time]

Pinneaple sponges or some tunicate. Harmless

 

[FurrierTransform]

maybe about 2-3 mm long? I had thread here recently asking about my similar things, and the consensus was that they are colonial hydroids. See here:

tube worm name? Thanks!

Gentlepeoples of Reef2Reef, I have these tube worms and never paid any attention to them for years and years. The tubes are brown colored, very small (about 4 mm long), with fronds or tentacles that are brown in white light. I recently switched over to predominantly blue LED, and found the...

www.reef2reef.com

 

[Existence295]

maybe about 2-3 mm long? I had thread here recently asking about my similar things, and the consensus was that they are colonial hydroids. See here:

tube worm name? Thanks!

Gentlepeoples of Reef2Reef, I have these tube worms and never paid any attention to them for years and years. The tubes are brown colored, very small (about 4 mm long), with fronds or tentacles that are brown in white light. I recently switched over to predominantly blue LED, and found the...

www.reef2reef.com

Yeah roughly 2-3 mm long. Some vary in size.

 

[vetteguy53081]

Just noticed these tube like creatures with fans at the end of them. Doesn’t look like aiptasia.

These are pineapple sponges which favor dark and low flow areas and derive from silicates and are short lived, They filter feed off algaes and soon dissipate. Often you will find them generate from new sand and dry rock or RODI units where the Di resin is leaking or used up

PLEASE refrain from posting as an emergency which would be a crisis situation requiring immediate help do to loss of fish or coral, tank leak and such

 

[Existence295]

These are pineapple sponges which favor dark and low flow areas and derive from silicates and are short lived, They filter feed off algaes and soon dissipate. Often you will find them generate from new sand and dry rock or RODI units where the Di resin is leaking or used up

PLEASE refrain from posting as an emergency which would be a crisis situation requiring immediate help do to loss of fish or coral, tank leak and such

Thank you for the response.