So, I saw an advert from a neighbour, who was giving these for free, because his lighting basically died and he couldn't afford a new one. These haven't had any light for a couple weeks, although the room they were in was full of windows, so they got some natural sunlight. I didn't have any coral in my nano yet, so I decided to get them.
I've seen two polips that are alive, but the rest has been closed for a few weeks. Are they dead? The tissue doesn't seem dead, but I don't really know...
https://m.imgur.com/gallery/V6wfT