Coral or nuisance?

[Mikeand Mel]

This started growing at base of pagoda. I have tried siphoning off to no avail. Now it is attached to a piece of rock. Is this a type of coral?

 

[BranchingHammer]

Looks like a brown version of green star polyps.

 

[Mikeand Mel]

Is there such a thing?

 

[PDR]

I can't say I've ever seen that before.

 

[BranchingHammer]

Probably, the structure looks almost identical to a green star polyp

 

[reef lover]

Is there a rubbery mat underneath ?

 

[garbled]

Do all the heads have 8 tentacles?

 

[aquatony]

Looks to be bubble algae right next to it. I’d call that a nuisance in my tank [emoji16]

 

[Mikeand Mel]

No mat underneath. hard to tell if all heads have 8 tentacles.
Bubble algae has been a constant problem.....been fighting it for 8 months. I try siphoning out everytime I do a water change.
Tried crab d green buying an emerald green crab. Did nothing.

 

[reef lover]

If no mat present i think anthelia...which some would consider a pest...

 

[kris2001]

No mat underneath. hard to tell if all heads have 8 tentacles.
Bubble algae has been a constant problem.....been fighting it for 8 months. I try siphoning out everytime I do a water change.
Tried crab d green buying an emerald green crab. Did nothing.

The best way to combat bubble algae is introduced 10 to 20 Emerald crabs at a time

 

[Mikeand Mel]

The best way to combat bubble algae is introduced 10 to 20 Emerald crabs at a time

I only have a 60 gallon isnt that a lot of crabs?

 

[PDR]

I only have a 60 gallon isnt that a lot of crabs?

Yes, that is a ton of emerald crabs. I would recommend 1-2 in that size tank. They will need to be fed once they finish the algae.

 

[garbled]

Never seen Anthelia with such boring polyps, usually they have pretty fronds.. I asked about the 8 tentacles, as that would make it most likely an octocoral, which would point to possibly Anthelia, or a really weird GSP?

 

[Ronny Bello]

Never seen Anthelia with such boring polyps, usually they have pretty fronds.. I asked about the 8 tentacles, as that would make it most likely an octocoral, which would point to possibly Anthelia, or a really weird GSP?

Your right I zoomed in on one and seen 8 tentacles good eye.

 

[Mikeand Mel]

How do I remove these, they seem to be growing rapidly.

 

[Mikeand Mel]

How do I get rid of these?
They seem to be spreading rapidly!

 

[garbled]

With something like that the only option is manual removal.