Curious what are these?

[HaZRaTTy]

Now that you mention it I will add however my nitrates are quite low but I have been spot feeding all my corals with phyto and the melt off of the food i've been feed which name escapes me right now. mrhasan did a post on it recently grr... my memory is going down hill!

[reefwars]

Ocean fresh pacifica plankton great food I use a lot of, its def the phyto sponges love it

[Myka]

Are the tubes easy to pull off? If they are easy to pull off they may indeed be tunicates (sponges). If they are stuck on there pretty good then they are probably hydroid tubes.

[11purewater]

Hydroid,or even vermatids i was thinking at first,but those Zoas would be so stung that pic from OP would look a lot differant.

[HaZRaTTy]

Thats IT! haha sorry pure this was in response to denny on the food

They are very easily pulled off with a razor just scraping. Tunicates I looked at and did some research from my understanding tunicates have a outer shell and on the tubes there are 2 openings, I also figured tunicates to be much larger! Do tunicates have any movement response when touched or scraped these don't move, don't close and don't FIGHT

[11purewater]

What happened!

[11purewater]

A 1 hour air bath will kill a tunicate then.zoa will be fine.

[Myka]

Originally Posted by HaZRaTTy

They are very easily pulled off with a razor just scraping.

Try just pulling with tweezers. Tunicates and sponges are delicate, hydroids have a surprisingly tough tube. If they are just dead hydroid tubes, there is no need to remove them unless you find them unsightly. If they were live hydroids they would be stinging the poop out of the Zoas.

[HaZRaTTy]

Sorry how do these things spread and keep growing if they're dead lol. I scraped them all off if they come back as I know I missed some it will be time for some oxygen therapy.

Thank you for all the info.

[11purewater]

Clavalina sp. hard to find info on these though