chocolatechip starfish dying

Hello!I am currently doing research with chocolate chip sea stars, and i’ve been trying to keep them alive until we begin our study. We acclimated them to the water temperature for 2 hours, the salinity was the same as the bad, nitrates and nitrites are 0, perfect temp. The tank has a filter, a...

This is my first post so I’m not sure I’m doing it right but I haven’t seen any other posts and I can’t find any answers anywhere... I got a chocolate chip starfish about a month ago and it had been fine until today, it’s brown chocolate chip spikes have turned orange.... does anybody know...

Hello, The starfish is one the first LS in my tank for about 5 months now. It has been doing well. But lately I have noticed a white layer on its chips. I will attach two photos of the first time I got it and what is happening to it now. Your guidence and help is always highly appreciated. I...