Hydroids?

[HolisticBear]

I apologize for the very fuzzy video.
There are a bunch of these under a frag, they look a bit like the hydroid pics from @Lionfish Lair . They are quite long, narrow at the base and the end (tip) is like a fan. Pure white. The tip looks almost like the arm of a mini brittle star, but it's like a worm leading up to that. Individual strands and I've seen individual ones extending from the sand near the frag.

New tank. The frag was dipped in bayer, but definitely came in on the base of this frag. Extend only at night. Light will make them disappear back into their home, will work on better pictures.

Update: replaced original video with improved video

 

[saltyfilmfolks]

I dont know. I really want to say its a worm. The hydroids I've seen usually dont move or look like feather dusters.

 

[KJ]

Spaghetti Worm?

 

[Tahoe61]

Might be digitate hydroids, hard to tell from the image. They are present in my tank and only come out at night.

 

[HolisticBear]

Might be digitate hydroids, hard to tell from the image. They are present in my tank and only come out at night.

Thanks everyone! They do quite look quite a bit like digitate hydroids, especially the pics in this R2R thread. They have distinct hairs, so not really like spaghetti worms.

Most people seem to roll with them. It would be easy to give the Cyphastrea a 10-1 peroxide dip if you recommend that.

 

[cloak]

Do they retract at all if you disturb them? Also if it's not too much trouble can you lay the coral on it's side for a minute and get a picture of the bottom of it.

 

[saltyfilmfolks]

I would pop it off that plug if your concerned Get a clean bigger one to encrust. I use sand dollars.

 

[HolisticBear]

Do they retract at all if you disturb them? Also if it's not too much trouble can you lay the coral on it's side for a minute and get a picture of the bottom of it.

Yes. They didn't like getting poked with my Kent Marine Sea Squirt. Also retract in light.

I would pop it off that plug if your concerned Get a clean bigger one to encrust. I use sand dollars.

Sand dollars, nice!

I need more practice. Getting frags off plugs is harder than I expected. Trying to get a Setosa off an ORA plug from the same order was a huge fail. I originally was gonna clip the plug as small as possible with bone cutters then glue to to tiny rock for it to encrust. I can take another stab at removing this guy. I hate to cause more damage to something that is happy + healthy.

 

[saltyfilmfolks]

I hate to cause more damage to something that is happy + healthy.

Haha, right!
I got one sharp chisel I don't mind rusting. wedge it between the plug and bone while it sits on a towel, in or out of water..

 

[Lionfish Lair]

I agree with hydroids.

 

[HolisticBear]

I dipped the offending plug, however they do seem to have multiplied elsewhere in the tank. I fear they may be responsible for making one of my acans close up. I believe he's getting stung. At night, I can see some hydroids near his base. I will try killing siphoning them with the sea squirt. (Sigh)

Update1: That was a fail. I see the hydroid in the siphon or being stretched in the siphon, but getting him out of the tank is trickier. They are in the sand bed as well as in a few places in the rock.

I wonder if this is going to become a big problem. Most are in the sand. It's a small tank. Removing all the sand is an option + then attack rock with super glue. I don't have experience with these guys. It's pretty rare to have things you can't treat, but I'm not seeing alot of info out there

Update2: Reading the fenbendazole thread. Still processing everything, pretty bummed

 

[HolisticBear]

I attempted to remove the sand bed today and misjudged the level of effort. I siphoned maybe 15% of the total sand bed. I ordered 'fish fenbendazole' yesterday. I'm concerned my cure is worse than the disease, so I will let the tank sit peacefully for awhile. Later I may target siphon the sand at night to remove hydroids I see. In two weeks when the fendendazole arrives, we'll see how the tank sits.

 

[HolisticBear]

bummer. Yesterday, this hammer got a 10-1 H202 dip for 4 minutes, followed by a CoralRX dip for 4 minutes. The dips either had zero affect or they attached today. I know drops with 100% regular 3% H202 kills them.

It's looking like 'fish fendendazol' from @twilliard for the rescue. Including buddies @GoVols and @AcanLord if they have other ideas.

I'll have fendendazol in a week or two, will continue to just monitor.