What are these?

[FishKeeper.mp3]

These kind of look like clove polyps and have the color of aptasia, but they don’t grow like aptasia and I had to remove a chunk of zoas to get rid of them and now they’re back. Any help would be nice.

 

[ISpeakForTheSeas]

An invasive octocoral (like clove polyps and their relatives) of some kind - there have been enough of these popping up recently that I'm tempted to try and actually figure out how to differentiate the various kinds.

Regardless, they're highly invasive, and it looks like they're going to be spreading more in your tank soon - the little, gelatinous mat you can see them growing from is going to spread and sprout more polyps, and the polyps can drop pieces that grow into new, mat-forming corals.

If you think you can remove the entire thing (mat and all) without losing pieces in the tank, you can try manual removal, but with at least some species (such as Blue Clove Polyps) the only really effective method I'm aware of is Fenbendazole.

 

[Reefkeepers Archive]

An invasive octocoral (like clove polyps and their relatives) of some kind - there have been enough of these popping up recently that I'm tempted to try and actually figure out how to differentiate the various kinds.

Regardless, they're highly invasive, and it looks like they're going to be spreading more in your tank soon - the little, gelatinous mat you can see them growing from is going to spread and sprout more polyps, and the polyps can drop pieces that grow into new, mat-forming corals.

If you think you can remove the entire thing (mat and all) without losing pieces in the tank, you can try manual removal, but with at least some species (such as Blue Clove Polyps) the only really effective method I'm aware of is Fenbendazole.

Kalk paste?

 

[ISpeakForTheSeas]

Kalk paste?

Kalk paste and other Aiptasia removal methods may be worth a shot (I don't know that they would work, but I've only really seen big clove polyps infestations where it wouldn't really be feasible, so it might), but you'd want to really keep an eye out for dropped or missed pieces.

 

[FishKeeper.mp3]

An invasive octocoral (like clove polyps and their relatives) of some kind - there have been enough of these popping up recently that I'm tempted to try and actually figure out how to differentiate the various kinds.

Regardless, they're highly invasive, and it looks like they're going to be spreading more in your tank soon - the little, gelatinous mat you can see them growing from is going to spread and sprout more polyps, and the polyps can drop pieces that grow into new, mat-forming corals.

If you think you can remove the entire thing (mat and all) without losing pieces in the tank, you can try manual removal, but with at least some species (such as Blue Clove Polyps) the only really effective method I'm aware of is Fenbendazole.

Ok, thank you for the id.