So I woke up this morning and noticed my black snowflake clowns gills are puffed out and he's not as active today. My other clown is perfectly fine and so is the royal Gramma both are active. So I tested water parameters. 0ppm ammonia 0ppm nitrite and 0ppm nitrate. He was totally fine before I turned off light yesterday. Any ideas of what I can do to maybe help him? Already have done a water change. And the thing is he isn't breathing all heavy even though his gills are kind of puffy. Any ideas or thoughts or things I can do to help



