Just found this.

[Reefer911]

Any idea what this is? My best guess is a mushroom but not sure really

Dead center in the pic. Down and to the left of the spot of coralline. Hard to see but zoom in and it helps

 

[blaxsun]

If you mean the green thing, yeah - looks like it could be a mushroom. Most likely a rhodactis (but I can't see clearly enough to be 100%).

 

[Reefer911]

Yeah that’s what I’m referring to . Looks more orange in person though

 

[Reefer911]

Could it be from this?

 

[Rick's Reviews]

lol, is this your tank or anothers

 

[Rick's Reviews]

You need to provide pictures for identification in 'your aquriam', this is a massive library and spieces are vastly different...

 

[Rick's Reviews]

Could it be from this?

Yours is Yuma

 

[Reefer911]

Ok it’s from these then

 

[Rick's Reviews]

Ricordia, let it grow more, another mouth will appear and then you can frag it, or cut off plug and attach to rockwork/aquascape

 

[Rick's Reviews]

Ok it’s from these then

Looks halfway there so just leave it alone for natural 'split'

 

[Sump Crab]

Looks more like an anemone to me. Maybe a Majano.