Advice

[gareth.hubbarde]

Got given this coral few weeks ago, it does not seem to be doing a lot. I don't know what it is, was told it's cauliflower coral. Occasionally will have bumps on it and others it just looks smooth. It's at the top of my rock so lighting is full on. Can anyone tell me what it is, and if it's looking OK?

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[JDWells]

I think that's definitely a leather, probably a toadstool. The bumps are it's polyps and in the picture above, it doesn't look like it's extending very much. They're usually very tolerant of high or low light I think and pretty hardy.