I realize the LR
piece that I found the aiptasia was in fact in the main tank for about a week. The piece was removed a few days before the markings appeared (or least when I noticed them).
They don't seem to be much worse, and he's acting fine. I'm going to go with the assumption he was getting cozy with the aiptasia unless he starts acting sick.
180G build thread
180G All-glass with dual megaflows in a custom stand
AquaC EV-180 skimmer
250 pounds LR
160 pounds aragonite
Custom acrylic sump from GlassCages.com
2xPCX-40 return pumps
2x250MH 14K, 2x175MH 14K - PFO lighting, 2x65W PC
No-name 36W UV
Water General 125GPH RO/DI