White spots on spray bar

[Jboat]

I have this white stuff growing on my spray bar. Is this cotton fungus and what should I do to get rid of it? It does not seem to be bothering my axolotls they are very playful and look healthy. Should I be concerned about it?

 

[Petersgirl]

Sorry, but I can't see it clearly enough to tell you. It just looks like water spray to me.
Could you get a clear pic of it outside the tank? Also, is it on in that photo?