I have had them for about 2 months. I have 2 ricordea, which are very happy, the rest are "regular" Actinodiscus/Discosoma mushrooms of varying colors (blue striped, blue, green and blue spotted red). The big striped mushroom under a rock is very happy.
I got them from two different sources online, so I don't really know what kind of lighting they were in. They opened up more when I first got them. the largest group is on a rock that is on the bottom of the tank, and doesn't get much flow at all. Some came attached to a bit of substrate glued into a half clam shell which is annoying as I can't get them out of the shell to put them somewhere permanent (I didn't realize the seller did that)