I have over 1000 gallons of SW tanks...but Rap is right we need your setup info.


Specifically:
lighting
salinity
flow rate
age of setup
filtration type
other inhabitants

I can tell you an anemone that is just bouncing along the bottom is dying so you need to get it wedge in a rock somewhere near the light.

To clarify this last point about wedging it in a rock...it needs to be a rock on the bottom with the substrate as the anemone needs to anchor in the sand