I am new to the saltwater experience. Over the weekend, I first stocked my tank and my tank started to cycle again (I used aged water from mmy local satly-store, and it was set up with some damsels for about a week). So my NO2 spiked and I lost all but one of my fish.

My yellow watchman was the only fish to make it.
So now I have a starburst that has not came back out since I put it in place on a rock. They were blooming, thats the best way i can describe it, when I first set the plug/starburst in the sand. But when I moved them they have not came back out and it has been about 24 hours or so. I have some button polyps and a mushroom that seem to be doing fine.
Do you think something may be wrong? Could the nitrite levels be effecting it?
