Does anyone know what's happening to this star fish on its legs near the base? Is it deteriorating? It was just purchased a week ago with firm legs and good movement. I can tell it's not algae. I did however have a fog machine running which has resulted in a cloudy tank for 3 days. My clam and corals are still very reactive and fully bloomed but could that have caused some kind of stress to the star fish? The only other livestock is a tomini tang, orchid dotty back and blood shrimp.