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Yeah, I don’t have an acclimation box so I’m going to move it to my frag tank, which I didn’t want to do because it’s less controlled than my display but maybe it’ll rule out the fish as I only have a clown, scopas tang, and six line wrasse in there.I would not leave it on your sandbed too long. Unhappy corals don't like to be blasted with light, but weak corals will starve if you keep them in too little light for too long.
You have lots of LPS and a few other SPS, so I don't think the issue is with your tank. You may have just got some bad frags of monti's or the tank's where they came from had some odd parameters and they were not able to adjust to your tank quick enough.
I would try another frag, perhaps from a different source. Just be careful about pests. Montipora eating nudibranches are easy to catch and very hard to get out of a tank. Monticaps are notorious for having them (none of your photos show any damage that resemble nudis).
not sure about this being a bad batch, I’ve been having this issue over the past year probably and this behavior has been seen with several orders of coral from at least 3 different suppliers that I can think of right now, keeps happening to all new acropora, montipora, leptoseris, and until recently cyphastrea although I have a happy frag right now that’s going strong.
over the time I’ve been trying these SPS I’ve changed lighting (AI to Radion), salt (Fritz to Red Sea) added flow, reduced flow, lots of ICP testing… one constant has been the fish, so I guess that’s possible, but I always tried to keep away from fish which would cause me problems, wasn’t expecting the coral beauty to be an issue. But, after some research, it seems I’m not the only one who’s had a coral beauty nip at stuff.