Noticed this spot on my tuxedo urchin this morning. Had it about a month. Lost a few spines right at first, but no more until last night, then I noticed this. Tank is newish (about 3 months), but supplementing with seaweed, veggie rounds/algae wafers. Added a fire shrimp, court jester goby and spendid dortyback earlier this week. Other tankmates are 3 regal damsels, 3 blue leg hermits and a midas blenny. No corals or nems. All equipment is in rear chambers and not accessible in display. Jbj 65, pics of parameters from LFS water test done today.
Anything I can do to help it?
Anything I can do to help it?