The heck is this thing??

[Whipples]

So this thing used to be on my zoa frag, but has since moved to the rocks. Any idea what it is? I think it left behind a spawn on my frag that I will need to deal with. It is just to the left, I apologize if it's not in great focus I am still learning the camera.

Thanks!

 

[SandJ]

Looks like aiptasia. Invasive and you will want to kill them. Aiptasia X is my weapon of choice, but there are lots of options. One thing not to do is try to cut/scrape it out. Anything not removed from the tank will turn into new ones. And if they feel threatened they can release more.

 

[Whipples]

Bummer, I was hoping it wasn't. I'll try the hot water trick, it's in a tricky spot...

 

[SandJ]

Is it in a place where you could put some superglue over it (or aquarium putty). This sometimes works if there is not another hole somewhere for it to pop out of and escape.

 

[InvertEnvy]

You could just get a peppermint shrimp. My tank was full of aiptasia at one point. I rented 4 peppermint shrimp from my LFS and my tank was clean in a week. I took the shrimp back and haven't had a problem since.

 

[Whipples]

I like that idea, if I can't get rid of it with the hot water trick I will try that. Thank you both!