I have both yumas and ricordeas For me it seems mainly to much light and flow.I would put it in a place with less flow and light. Mine got over the light over time but the flow was initially to much as I am trying to keep a somewhat mixed tank. Got to cater to SBB acros. I found a happy medium. With less flow and light for the shrooms. My ricordea moved by it self as well. Had to move the yumas and they are thrieving now. Put it in the shade if you can. I am not a mushroom expert