My tank has a live rock, but sadly it's from the Petco with the messed up aquariums.
My clownfish has Ick, which is what was at the Petco, it's literally eating him alive. So, he's not going to make it, and he is in a separate tank. He was doing better, and when I unfroze and put those mini shrimp food in there he went crazy and swam all around eating them, had was so happy. Then he started to lay down, then get up again, then he'd swim up high and fall down and hit the rocks. It was sad to watch.

My other fish is a Bangaii Cadinalfish, just looked that up, and I'm changing out 50% of the water daily, and checking the salinity daily, leaving the light and filter on most of the time.
I also have the hermic-crab thing, and a emerald crab.
(the salinity, and temperature are at good levels all the time)
Pretty much all I have to say is, If someone's clownfish is breathing fast it might have Ick. (Which makes it hard to breathe, and they'll get white spots (my clownfish's white spots disapeared sometimes))