ID anyone?

Aptasia. Yup it is bad. Kill with Joe's Juice or get a Peppermint shrimp to eat it. Don't crush it because it will spread into many more.

When I first set up my tank, I took everyone's great advice and shot the one aiptasia I had up with kalk, and it quickly multiplied into about 50. I got 2 pep shrimps and they took care of them. Now 4 years later I have one aiptasia, and I just leave it alone. It has been there for over a year, it's not harming anything, it's not getting bigger, and it's not multiplying. From what I've read, if you don't have a lot of nutrients in the tank, they won't multiply. If they do, pep shrimps work great. Just make sure you get true pep shrimps.

Tasha

Looks like curly cue, specifically, in case you want to research.

i dont think its a curley cue.