Pink slimy growth on feather duster casing

[Tman007]

I have a feather duster that's been in my quarantine tank since I got him (from ReefCleaners) a month ago. There's this pink slimy growth on the mid-section of the worm casing that has about doubled in size since a month ago. Any clues what this is?! Good or bad?

 

[WheatToast]

Looks like a sponge. These are harmless filter-feeders and part of a healthy tank ecosystem. Air exposure can kill these creatures.

 

[Tman007]

Looks like a sponge. These are harmless filter-feeders and part of a healthy tank ecosystem. Air exposure can kill these creatures.

Thanks, I was wondering if it could be a sponge. What caused me a little concern is that I couldn't find any other thread on R2R mentioning a pink sponge like this. Has anybody else had something similar?

 

[WheatToast]

Thanks, I was wondering if it could be a sponge. What caused me a little concern is that I couldn't find any other thread on R2R mentioning a pink sponge like this. Has anybody else had something similar?

I have a similar sponge in my macroalgae tank, one with transparent tubes (oscula) on an opaque "base." However, this one is tan in coloration. I also have a pink sponge with a different texture. Neither have caused issues, though the tan one has gotten very large.

 

[WheatToast]

Tan sponge:

Old pink sponge photo:

 

[Glenner’sreef]

Definitely had pink sponge like that in the past. They tend to come and go. In a year from now you may have a white or yellow varieties.

 

[ying yang]

Yeah looks like sponge,and in first picture should see these transparent tubes almost pulsate for lack off a better word letting water get in and around it

 

[Tman007]

Thanks guys - it's reassuring to hear all your feedback and experiences. It'll be interesting to see how this evolves in the future.