I had a lush layer of moss stunting the plants and decided that I would just pluck them out of the media and put them in water while I remove the moss layer and replace with sand. I fully expected a lot of reacting but was hoping for some survivors. That was a few days ago. Looks like I got lucky.
Here's the "before" for D. omissa x pulchella:
This is the "after" for it and a few others:
It can be done!