im have soon fish problems. i did a like a 45% water change on my 75 gallon yesterday and all my fish are gulping the water now. then where fine before the water change but not after. test the amonia and its 0. i would test the others but i dont have a test kit. t Does anyone know whats wrong? here is a vid attacked so you can see what im talking about, well i cant figure out how to upload a vid. when i find out ill do it