Urchin hasn’t moved in days

[kammycat2002]

So I have a pincushion urchin who usually is very active. I did a water change a couple days ago and he spawned and now hasn’t moved from his spot for about 2 days. I know he isn’t dead cause his spines are moving and he’s holding onto a shell. He hasn’t dropped any spines either. I just find it weird that he used to be so active but now he doesn’t wanna move. Should I be worried? Is there a reason this may be happening?

 

[WalkerLovesTheOcean]

Pincushion urchins are nocturnal, so it's possible that its moving at night and you don't see, then it goes to the exact spot during the day. I have heard a few stories like this. Try putting some nori in the tank, and check back after an hour or two after the lights are out.

 

[kammycat2002]

I stay up pretty late and can confirm he has not moved

 

[TehBrainz]

Can you tell if its little gripper tentacles are moving around? Has it lost any spines?

 

[kammycat2002]

His little grippers are moving around and he has not lost any spines. I moved him to a different spot in case he was just stuck. He’s mad but he otherwise seems ok.

 

[AydenLincoln]

That’s good then he isn’t dead. I would just monitor him.

 

[kammycat2002]

Ok so I think I figured out what happened. Ma astrea snails all suddenly died and I looked up why that could be. And it said they can die from temperature increases. Turns out, after I changed the water I adjusted my heater and had accidentally set it a couple degrees higher than usual and my thermometer didn’t catch it. (Usually keep it at 78 but set it to 80) so i turned up back down and hopefully he’ll perk back up gotta get a new thermometer now