Why would the water go cloudy when he gulps air? Axolotls do gulp air from the surface mine does alot but he does it so he can float about it could be normal or it could be due to water quality issues. Either way I find it strange that your water is going cloudy from gulping air? have i understood your question?
If the water is cloudy you'll need to do a water change.
You need to get the water tested at a store...or use a test kit if you have one as posting the water parameters would be necessary.
Pictures would help as well so we could see your set up. :happy:
It’s very dry in Colorado. I make sure to spritz every night so while I’m sleeping. I have a nifty hydrometer that I got from Walmart. It tells me blue, green, red; too little humid, good, too much respectively. It’s been helpful to me.