Good news, this bryopsis clump is about half gone today, yay! I'm planning on keeping the Mg at 1900 for a while, probably a month, until I'm ready to move the tank to the new house. Hopefully it continues to wither away and be eaten. Tonight I noticed more snails laying on their sides or back. The long spine urchin looks faded, I guess that's how to describe it. It's not as bright black as it used to be and has dropped a few spines. I hope it adjusts. That's about all that's happened. All the corals still look good!