Hydroids? Sponge?

[pythpyth]

Hi all!

Does anyone got an idea what these are?

Thanks for replying!

 

[EnterName]

Looks like some Botryllus (or related) tunicates to me.

 

[Tahoe61]

Tunicates.

 

[pythpyth]

Looks like some Botryllus (or related) tunicates to me.

Wow! Never thought about that, there are so many though!

 

[EnterName]

Looks like some Botryllus (or related) tunicates to me.

Wow! Never thought about that, there are so many though!

Are you feeding a lot, like plankton or powdered coral food? These things are filter feeders, maybe it's just a good spot for them to grow. I'm actually not sure if some of them can spread too aggressively so keep a photo so you can track how fast they spread.

 

[pythpyth]

Are you feeding a lot, like plankton or powdered coral food? These things are filter feeders, maybe it's just a good spot for them to grow. I'm actually not sure if some of them can spread too aggressively so keep a photo so you can track how fast they spread.

I do feed quit heavy yea. I did feed plankton for some time not anymore though. I have some plankton dust from Nyos in my frozenfood. I dont feed any reef roids or any. I dont mechanically filter either. And I still run on low nutrients haha.

 

[EnterName]

Are you feeding a lot, like plankton or powdered coral food? These things are filter feeders, maybe it's just a good spot for them to grow. I'm actually not sure if some of them can spread too aggressively so keep a photo so you can track how fast they spread.

I do feed quit heavy yea. I did feed plankton for some time not anymore though. I have some plankton dust from Nyos in my frozenfood. I dont feed any reef roids or any. I dont mechanically filter either. And I still run on low nutrients haha.

They are filter feeders so they surely appreciate you feeding a lot

Regarding the nutrient levels: this might change over time, but it doesn't has to. Time will tell