I wanted to update this thread.
So my tank is now doing amazing. My alk was higher than I wanted so I let the tank ride for about 2-3 weeks with no water changes to allow the alk to drop. At the same time I had a small cyano outbreak so right before my water change I dosed with chemiclean with my skimmer off for 2-3 days.
After a 5g water change my alk was at a 8.5 and there was no cyano algae anymore. I did my regular test and noticed that my nitrates jumped up to about a 5ppm from a 0ppm according to Salifert. I assume this was from my skimmer being offline for a couple days and 3 weeks in between a water change.
What I was surprised about was my zoas started looking better and better. Deep bright colors, polyps fully open, and all my colonies went into a massive growth spurt. My red hornets in particular threw out 4 new polyp bumps within a week. The few started SPS I have are growing like never before as well.
So, either cyano was bothering corals, alk was too high, or I had so little nutrients that the corals were starving. Either way I'm excited.