Tiny filter feeder?

[mattd017]

Well, he's still there. Definitely a light lover, so hopefully he's the noezoanthus or some other type of coral. I'll update in a couple weeks (months?) when he's bigger and maybe more identifiable.

 

[PeterEde]

I have 2 of these. Not sure it has enough tentacles. I think mine have 8 or so atm

 

[mattd017]

So, turns out it was aiptasia. I think. I had it "quarantined" in a small ball jar with mesh on it. It wasn't growing and was just an algae farm, so I took it out and put it back in the sand between some rocks. It disappeared for about 3 weeks. I came home from a week away and, besides the few islands of GHA, there's a big ugly aiptasia near where I put the unknown f**ker. He's now in the Milwaukee sewer treatment facilities.