Short update and lessons learned ...
The Blue Ricordea mushroom didn't make it. I think it was too much light in the QT. I'll get another, but will not use a QT again for corals, at least not until I have a lot more experience with them.
All but one, maybe two, Blue discus mushrooms died. There were three left when I moved the rock into the DT. One may have been picked off by my Singapore Angel, don't know. It was there, looking healthy, in the evening then gone in the morning. The last one is doing really well. It has opened up and the base looks like a deeper blue rather than brown. It definitely likes the DT better than the QT.
Unfortunately my favorite fish didn't make the salinity transition. I knew I was moving the salinity up a bit faster than I originally planned, but was hoping the fish would be OK. My Ruby-headed Wrasse stopped eating and kept hiding in the rocks. I was finally able to catch him and put him in quarantine but it was too late. I'll definitely get another one down the road and maybe even a second reef safe wrasse if I can find one that is small enough.
Lessons learned ...
1. QT works in theory, but I need to have a better way to adjust lighting in the QT if used for corals.
2. Although I researched the needs of the mushrooms for months before I purchased them, I didn't research how to use a QT with them nor did I actually understand what was meant by low or medium light. Low light to me meant anything under a 60 watt bulb.
3. I should have waited to get the corals until after the DT was back to normal so I didn't have to rush the salinity when things didn't go as well with them.
4. Stupid hermit crabs can survive hyposalinity better than I thought :grumble:. I only plan on adding snails but originally put in some red-legged hermits. I knew they could kill snails but didn't think they would kill all of them.
Thank you to all who helped with advice. I have definitely learned a lot through this experience. I'll continue to learn and eventually build a healthy environment for both the fish and corals.
OK, I guess that wasn't so short ...