Look at the pic, whats wrong with the bubble

[nauticac4]

Here is a pic of the bubble coral what is going on first time I have seen this

Checked params this morning and everything is good. nitrates are about 10ppm. Everything else is good however I did do a 20% water change to help with the nitrates. Please help.

 

[Shnabbles]

I would say its dead or damn close to it.... How is your Mag Ca and ALk?

 

[nauticac4]

Well I got home from lunch and the bubble is out and look as good as it ever has.

 

[YoitsArson]

weird. good luck.

 

[Lishoop6]

had the same thing happen to me a couple times turns out my hermits were checking it out for food after I fed and gave it a pinch