Can anyone tell me what these are?

[willclark7]

Hi All. Can anyone tell me what these are? They look like aiptasia but tall and green. My rock was full of Zoa life now it’s pretty much empty

 

[ScottJ]

Maybe a picture in white light would be easier ID?

 

[Crabs McJones]

Hydroids

 

[willclark7]

Hydroids

Thanks. Bad? Ok? Get rid off?

 

[Crabs McJones]

Get rid of if possible. Most the time they tend to die out on their own

 

[Mr. Mojo Rising]

colonial hydriods. They spread pretty slow, but they will spread nonstop on any open rock. I have them too, I drilled my rock to remove a section of rock, but I didn't remove a large enough piece so they are spreading again.

The tubes are rubbery, so you can't break them or pull them out. If you put a rock or glue or putty on top they will just grow from under. The only way to get rid of it (that I know of), is to chip away part of the rock and remove the root.

 

[willclark7]

colonial hydriods. They spread pretty slow, but they will spread nonstop on any open rock. I have them too, I drilled my rock to remove a section of rock, but I didn't remove a large enough piece so they are spreading again.

The tubes are rubbery, so you can't break them or pull them out. If you put a rock or glue or putty on top they will just grow from under. The only way to get rid of it (that I know of), is to chip away part of the rock and remove the root.

Great thanks. I’ll give that a go