What is all over my SPS?

[ssick92]

Help!

I brought home a beautiful new acro yesterday, and then today when I got home from work I noticed these little fuzzy things all over it. I have a few other SPS in my tank and there are so far none of these little buggers on any of them, but I'm worried. Can anyone tell me what these are and how to get rid of them? Are they nudibranchs? There aren't any spots that I can see that have "bite marks" or loss of color and PE is still strong. Are they anything to worry about?

SPS-1 by ssick92, on Flickr

SPS-2 by ssick92, on Flickr

 

[reef bloke]

I think these are small hydroids that live quite happily with the coral rather than kill it as I've seen them many times before

 

[nashorn]

Don't you dip? If so what did you use since it didn't kill them.

 

[ssick92]

Don't you dip? If so what did you use since it didn't kill them.

I usually do, this was one of the few times that I didn't... That'll show me right? Although I've been frantically googling and seems like they don't really harm anything and should go away on their own in time. There were a couple posts elsewhere that saying doing a dip didn't kill these things anyway.

I'm going to keep a close eye on them but as long as the coral still keeps it's color and has good PE I won't be too worried about it anymore.

 

[Icefire]

Zanclea margaritae

 

[bogg]

Thell go away

 

[reef bloke]

Ice fire has it, at last a name for them and good to know my suspicions were well founded.

Ps a dip wouldn't have helped you, as these are basically corals themselves a dip would have had to have been strong enough to kill both coral and symbiont

 

[coral102]

I think these are Zanclea hydroid.

FYR...http://www.reefcentral.com/forums/showthread.php?t=2335683&highlight=zanclea+hydroid

 

[cleverbs]

I see these a lot on mariecultured frags at one of my lfs =/ I never buy them because I dont know if they cause dmg and IDK of a dip that will kill them

 

[flworkd]

I've seen these on hundreds of maricultured Acro colonies. My guess is that they all came from the same farm; an area with enough particulate matter in the water for them to feed off of. Once imported I watched them die off over time, every time. I've never seen [or heard] of them spreading to other colonies, however. Very interesting observation. IME the hydroids don't have enough food in the water column to continue filter feeding over time. I've never held up on feeding to rid of them, but I don't feed any powdered foods (if you do I would halt that temporarily). IME no common dips eradicated them.

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