Hello, I have a green discosoma mushroom that I fragged. I put it in a petri dish with rock rubble. The next day, they were all fine but I decided to add a piece of mesh. However, when I pulled the dish out, it stirred up some sand and 2 shrooms fell out. They disappeared ever since. I have two questions, one, will they die submerged in sand and two, will they grow in low light as I am pretty sure that they are not getting any light