Sadly, I bump this thread to let you all know this tank has suffered a major set back. I've lost most of my coral colonies, though I haven't removed them yet as some are still clinging to life. I expect when this is all over that at least 75% of the tank will be gone, which sucks.
I started having issues a few weeks ago and it turns out my father began lighting incense around the same time. Thought is the incense has some sort of chemicals in the smoke that was taken in by the skimmer and then mixed with the tank water, creating a slow death for the tank as the chemicals built up. I only noticed he was lighting it this weekend and he has since stopped.
I've been doing large water changes, running carbon and I'm getting some polyfilters tonight.
Aside from the corals, I've lost about 15 fish in total. Hoping the ones that are left pull through.
I'll rebuild slowly, this time with a mixed reef. Softies dont seem affected and LPS show only minimal signs of stress.
Just needed to share that.