Bubble in hammer?

[PasstheTorch]

Hi!
I was looking at my tank and I saw my ycg pearched on my hammer like always, but the hammer had like blown a bubble.... Did the goby cause this and is it bad? I got a quick an crappy iPhone pic of it..

 

[Samc]

I've had bubbles pop up on my hammer, usually it grows right after the bubble goes away. I think it's pretty normal.

 

[Reef_Wizard]

I agree. Hammer and frogspawn are known to do that when they are about to split or grow. It will go away.

 

[PasstheTorch]

Cool!! Thanks or the info.