Yuma Mushrooms shrinking??! Help!

[Levib.Lenhart]

My Yumas (not sure exactly what kind) have been thriving but all the sudden starting yesterday they’re not looking so hot. They’ve shrunk a bit and the colors aren’t as vibrant. What’s going on? Are they dying? Before and after pics attached (apologizes for the after pic, diatom bloom)

 

[AllSignsPointToFish]

I doubt they're dying. They might be ticked off from a change in water or light flow. If they start detaching in large numbers, then you have something to worry about as mine did that when I had really low nutrients. I would observe and test, just to make sure nothing obvious is off.

See if they bounce back tomorrow.