Yes I have. There is a wide range so lighting and flow can vary quite a bit ime
The red one I had which I believe was an ORA one was pretty easy for me
I recognize those rocks I think!
Make a tank journal. There’s no way for us to know about your tank if you don’t.
Could be a lot of things. Start with stable salinity, and temp and go from there. Lighting, flow, tank inhabitants, ph, alk/ca/mg