I have a sand sifting star fish that's loosing his legs and I don't know what to do. I have a 20 gallon tank and all params are good I'm not sure if its starvation being eaten or I changed te rocks around a couple weeks ago and maybe I trapped him under a rock and he lost them to escape. Do you think he will recover or should I donate him to someone with a bigger tank so he could find
Also I have a green star polyp that was doing amazing and grown on anything it could reach then it just started to open less polyps every day and now there's only 2 polyps open. The Matt is still deep purple I'm not sure to try move it or add something?
My tank is a 20 gallon reef with fish.
Mag - 1350
Ph- 8 ( I've never been able to get this higher than 8 for some reason)