I've seen a few of these coming out of some corals. This guy isn't doing well and I'm curious if this could be contributing. Any ideas what it is?
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A bit, but it appears to have some black stripes.Kinda looks like aiptasia tentacles.
I'll give that a try, thanks!Im agreeing on aptasia
Under certain light wave lengths, they show stripes and bars (as shown below) Take a syringe or pipette and squirt kalkwasser powder mixed with tank water into a paste the consistency of toothpaste into its center core and it will melt away
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Thanks for the suggestion!If they keep coming back after treating as mentioned above, you can try getting some berghia nudibranch. My daughter's WB20 cube got infested with aiptasia while I was away for work and manually zapping them wasn't going be possible. I got several berghia from ReefTown and, two weeks later, no aiptasia!

