Toadstool mushroom coral -- what is this bump?

[helwrj28]

Hi there, just curious if this is anything that should be a concern and dealt with..

And some background information, my tank has a pair of clowns, a damselfish, and cardinalfish. For coral I have a mushroom, GSP, leather, and a Zoa. All are doing well but my Zoa (not sure what's going on but that's a different issue). CUC I have a few trochus and nassarius. System is a 90g.

Parameters have fluctuated a bit in terms of nitrates (working on getting them up and stable). Everything is currently as follows and has been stable:
Phosphate .25
Nitrates 20
Magnesium 1380
Calcium 450
pH 8.0
dKH 7.5

 

[RedReefer]

Looks like a baby starting

 

[helwrj28]

Looks like a baby starting

Thanks! I certainly hope so, it's still looking happy and healthy! I didn't know it could bud on it's stalk..

 

[helwrj28]

The coral still looks happy and is opening but the stalk seems smaller.. should I be concerned that something else might be going on?

 

[Sleeping Giant]

baby

 

[helwrj28]

baby

Is that common when a baby is forming? Because that bump on the stalk is more pronounced now..