RBTA not sooo Bubbley?

[NyteReefer]

Usually is it really bubbley, and right now its not bubbley. Can somebody explain this? I just did a wc to see if that will help

 

[Bebo77]

change lighting? have you fed it? how long have you had it?

 

[NyteReefer]

I did the wc, and it is bubbley now, thanks anyway. Sorry for wasting your time kind of.