Hi, i’ve got a collector urchin who is upside down and not eating. I tried giving him some nori but he found it in a different area of the tank so he never really ate it i guess. he isn’t losing any spines. everything else is fine, other inverts are happy. he has been there for like a couple days maybe? i can see the spines still moving but hasn’t left that place. I’ve had him for about 6 months.

