I haven't posted an update here in a while!
After the tank issue where all the fish died I let it sit for a few weeks. Stopped all dosing and water changes. Added fresh carbon and ran an air stone once in a while. It took quite a while but the water eventually cleared up. A 20% water change and all params looked good so I added two little ocellarus clowns. GHA and dinos on the sand had been increasing so I also added a couple emerald crabs and a few more little blue leg hermits.
As of today things are looking much better. Clowns are happy and the cuc is doing a great job on the GHA. In a week or two I'll add another diamond goby to keep the sand clean, and they are fun to watch! Corals have been fine all along. I will post some updated pics later. :)
Oh! I almost forgot, I added a refuguim to chamber #2. Chaeto in the chamber 2 basket and an Innovative Marine ChaetoMax light stuck to the outside glass. I scraped off the honeycomb where the light shines through and have it on a timer opposite the display light (overnight).