I actually tried some ghost shrimp once but didn't have food for them because I bought they'd eat the "algae" in my tank. Well...it was cyanobacteria. I had five of them and they all died with in a week. I'm not sure if it was because of the lack of food or if Aidan did them in. When I was watching after putting them in the tank, he did flare at them and was very curious, but I never saw him pick at them. He didn't seem to try to eat them either. I just found them white and not moving. They lasted a week and that was it.
Now...are cherry shrimp ok to keep in somewhat hard water? I read someone say recently that shrimp have a hard time molting in hard water. My ph is 8.2, can't remember the Gh and Kh at the moment. Same with the khullis. I'd love to have some of those but not if they aren't fairly adaptable. My water may be just a bit too much.