Fuzzy barnacles??

[Reefer Dan]

Hello, I have some maricultured rock I got in from Florida and I have seen several of these on a few different rocks. Any ideas what they are?

 

[vetteguy53081]

Tubes from little filter feeders

 

[Isopod80]

I can barely make out the two creatures I believe you're referring to. My guess would be either a type of sponge or tunicates. Can you get a clearer pic?

 

[Reefer Dan]

I can barely make out the two creatures I believe you're referring to. My guess would be either a type of sponge or tunicates. Can you get a clearer pic?

They are hard to take a picture of. Here are a few more?

 

[Isopod80]

Yeah, still tough to see clearly. The appear to be a pretty common grayish sponge often found on Florida rock. They shouldn't hurt anything. Sponges like that often die off after awhile in most tanks anyway.

 

[Reefer Dan]

Yeah, still tough to see clearly. The appear to be a pretty common grayish sponge often found on Florida rock. They shouldn't hurt anything. Sponges like that often die off after awhile in most tanks anyway.

I’ve been trying many times to get a better picture, this is the best I’ve gotten. They are multiplying. Still a good thing?

 

[WheatToast]

A little off topic, but where did you source the rock?

 

[Isopod80]

I’ve been trying many times to get a better picture, this is the best I’ve gotten. They are multiplying. Still a good thing?

Ok, I can see them better in the last pic. They are a variety of colonial tunicates. Harmless filter feeders but you may have to remove some if they begin to grow on corals. More than likely most if not all will die off as the tank matures. Personally, I like stuff like this in my tank. Here's a picture of a similar variety growing on some zoas.

 

[Reefer Dan]

A little off topic, but where did you source the rock?

Kp aquatics (Florida)

 

[Reefer Dan]

Ok, I can see them better in the last pic. They are a variety of colonial tunicates. Harmless filter feeders but you may have to remove some if they begin to grow on corals. More than likely most if not all will die off as the tank matures. Personally, I like stuff like this in my tank. Here's a picture of a similar variety growing on some zoas.

Ah yeah looks like it. Thanks for the help and insights.They didn’t look like something that could be problematic, but I noticed them spread fairly fast so figured I better double check. Thanks!