Hi, I came home from dinner tonight to find my clarkii clownfish sitting on the bottom of the tank, he was a very active swimmer before and all of a sudden he just sits on the bottom, he will swim some but always goes right back to the bottom, it seems like his swim bladder isnt working properly and he is too heavy in the water, all other fish including another clownfish are doing well, i did move him to the refugium to hopefully give him a calm place to relax, if he is still alive and not better when i get home from work tomorow ill set up my quarantine tank for him, but anyone have any ideas?