I changed my media the other day and added water that had evaporated and all of a sudden my fish are breathing at the surface and my water is cloudy. I tested my water it checked out fine and so I added salt and this helped. They aren't swimming at the surface but still hanging out at the top. Also, I have done two 30% water changes. Any advice? ***after adding water, fish, new media, etc and after water changes I always add declorinator and quick start. I posted a picture, but the picture doesn't show how cloudy it actually is.