-Sorry For Posting Alot- Hello, I recently go a blue lincktia starfish which had awesome colouration and was very healthy, and he moved around my tank a lot (When I was out of the room) and I did a water change and I moved him from the top to the.bottom and when I poured in the new water (Heated only a little cold) he got sand all over him and he stopped moving, he hasn't moved for a while now, my tank is cloudy right now so would he be filter feeding and happy?