Is this aiptasia? I killed many before, but these look different.

[laapsaap]

Is this aiptasia? I killed many before, but these look so different. More white, slim and smaller 0.5cm. But i noticed today i have many, like 30+ at one spot!

Thanks


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[frisbee]

Colonial Hydroids most likely. These have been known to irritate corals, but it looks like they're under a rock somewhere so they shouldn't be a problem.

http://www.lionfishlair.com/hitchhiker/hitchhiker.shtml

 

[Susan987]

Have you gotten all the aptasias eliminated? I had some in my overflow and if you are having a problem, use the boiling water method.

 

[Mike Johnson]

By your description I'm thinking it might just be Foraminiferans. ?