Zoa not opening and possibly being eaten

[Addicted2Reef’n]

I mounted some zoas in my tank 1 week ago and they have been open and no signs of issues all week and noticed today they were all shut during prime time of day. I have several different Zoa frags close and then seem to either melt or be eaten little by little over past 6 months or so. I have tried to eliminate the culprit by sending certain citizens to time out. First it was the Halloween crab but then another Zoa colony started to miss a few polyps and then vanished within a week. So the Halloween crab traded places with the black urchin. The Urchin has been in the sump for a month or two and no other zoas have disappeared.
I thought I had this issue handled but today this new frag is closed up and I can’t tell if it shows signs that it has been someone’s appetizer.

Tank is a 150 w T’5s that ramp to 80
Flow is 2 maxspect 250’s @ 50%
Alk 8.5 Ca 420 mg 1350 Phos .03 -.05 Nitrate 5ppm
Stock
Blue hippo. Yellow tang. Fox face. Anthias. Flame Angel. Firefish. Coris wrasse. Mandarin. Leopard wrasse. 5 chromis

Run a refugium w chaeto and have a very large pod population including many amphipods but largest population in rock work etc is munnid isopods.

Very possible I’m bugging and there is no issue but would like to know if anyone thinks there is evidence of predation on these closed zoas.
I redipped them and besides what looked like a white translucent worm and a copepod I did not see anything else like white bugs or nudibranches.

 

[fishguy242]

Foxface and flame angel both possible culprits ?

 

[BonnieB]

Oh dang! What @fishguy242 said!

 

[Addicted2Reef’n]

Yes I know. I have hundreds of zoas in my tank and they are left alone. I hate to think it would be them because I love their personalities. If it is them they seem to choose only certain zoas. Whether that’s size , color or taste idk but I am going to be watching them closely.
Zoas still haven’t opened fully after dip last night but a few seem to be starting to open back up so my fingers crossed.