Has by sea urchin died?

[RAGITYRHU]

My sea urchin has lost all of its spikes last night which I believe can be attributed to excessive temperatures due to the hot days. Has it died due to stress?

Thanks from Down Under

 

[ZANYMASTER]

High Nitrates are usually the cause as well.

 

[mandown123]

how high are your temperatures? if your tank is routinely hitting 90 degrees you should invest in a chiller. or run house air conditioning. How long did you have the urchin? Sometimes they don't acclimate right, same as stars.

 

[RAGITYRHU]

Thanks for your assistance guys.

I recently bought the urchin about 4 weeks ago. My tank temp is set at 26C (79F) but a for couple of days the temperature peaked to 30C (86F) - summer is finally arrived!
Just to add salt to the wound, my large blue legged hermit crab and juvenile emperor Angle were lining up to take a few nibbles. So it doesn't surprise me that it was getting stress if I think about it.
I left the urchin over night in my sump but when I checked it in the morning, it smelt a bit funky...

I will have to fix my temp problem before I procure any more fish etc - the summer here can get pretty hot - last summer the temp hit 42C (108F)

Checked my water parameters and other than the temp, set points are all within the limits.

Cheers