Sea hare HELP?

[saltwateraqua]

So I have a 90 gallon reef tank with a 30 gallon sump that over the past couple months while at college was overwhelmed with algae of all sorts so decided to purchase a hare as part of the clean up crew he was doing a amazing job for the past three weeks but for the past 2 days he has shrunken and will not move... parameters are all in check it is a well established tank over 5 years with little to no fluctuation... anybody have any idea what could be wrong? Any help would be greatly appreciated


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[coralcruze2020]

My guess is that there might be sulfur buildup in your sand? It looks like its dieing. If so it needs to be removed.

 

[Michael Hoaster]

How's the hare now?