What are these?

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IPT

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Man, I bought some zoa frags and inspected them and keep them in a seprate tank for a about a week. Dipped with Coral RX and did a H202 dip too. Now about a 2 weeks later I am taking macro photos in my tank and first off notice some Aptasia! I took the frags out removed the plugs if they had any aptasia. I cut away any healthy polyps and tossed any that had aptasia on them or in between the polyps. Hopefully (fingers crossed) I found them early enough.

Now I am diligently inspecting these frags (or what's left of them) and I notice some algae of course and some filaments. At first I thought it was algae or just some hairs from the CA glue I used to mount. On closer inspection, I don't know what they are, but they for sure have stalks and some sort of tentacles. They are whipsy thin (you can see the size of the closed Zoa for reference. I only see them on a few of the frags and I hate to toss even more, but what are these and need I care?

IMG_8794.jpg
IMG_8796.jpg
IMG_8795.jpg
 
Hydroids
 
Ugh, that's what i was afraid of....

I just covered them in kalk paste and out of the tank tried to pull off as much as I can. Then I rinsed them off in another container. Ugh, I hate to toss the frags.

Maybe more H202 dips?
 
Does anything kill these, or should I try and cut away a polyp if I can and toss the rest?
 

WHICH SUPPOSEDLY EASY CORAL HAS GIVEN YOU THE MOST TROUBLE?

  • Zoanthids or palythoas

    Votes: 18 19.8%
  • Mushrooms or Ricordea

    Votes: 18 19.8%
  • Green star polyps

    Votes: 11 12.1%
  • Xenia

    Votes: 9 9.9%
  • Leather corals

    Votes: 9 9.9%
  • Duncan or candy cane corals

    Votes: 21 23.1%
  • Birdsnest or Montipora digitata

    Votes: 23 25.3%
  • None—mine have lived up to the reputation

    Votes: 5 5.5%
  • Other (tell us which one)

    Votes: 3 3.3%
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