I had the normal diatom bloom and the tank looked like it was progressing normally. I added fish and corals and the corals looked stressed. I tossed in a bit of birds nest from my 120 and it died in a few days (confirmation that something wasn't right). I pulled the other corals and let the fish ride it out for a bit. Algae started to grow on the rocks and back wall and the tank started to get cloudy. It was gradual and seemed to get worse as the day went on. I think the cloudy water might have been bacterial, but I'm not sure. I'm guessing it was because it got better when the lights were off and got more and more cloudy as the day went on. The tank is cloudy again (maybe the rock is also problematic), but the zoas on the LR that can't be removed look like they might be doing fine. I haven't really given them a good look because I'm just letting the tank run and not paying a lot of attention to it. Getting new rock, or acid washing what I have is going to be the next step, but the sand bed was definitely part of the problem. I find it odd that the rock would make this tank cloudy, but not the tank it came from before being added, literally within a 30-45 minute span of time between removal, gluing the scape and adding to the new tank. If it doesn't clear in a week or two, I'll probably go after the rock. I have the luxury of time since I have the BioCube running for the fish and consider the zoas expendable.
For your tank, just watch it and keep an eye out for struggling corals. They are the most sensitive and will show the first signs of trouble.