Aiptasia or Tunicates?

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tobiwaid

Aquarium Advice Newbie
Joined
Jul 18, 2013
Messages
1
Hello,
Can anyone tell me what this is? This has been growing in size for a couple months now, and there are smaller patches that grow elsewhere in the tank. I'm not sure if I should be concerned or not, I know its not very pretty to look at.

I have attached pictures. (please excuse the diatom mess, I am saving for a new light fixture :rolleyes:)

Also, there is a picture of my live rock, there appears to be something drilling holes into it. You can see a tiny little hole in the center of each white patch. You can see there are about 3 right next to eachother in the bottom middle part of the picture.

Any help would be appreciated! Thanks!
 

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