We can't figure out what is going on with our tank, especially our shrimp. I noticed today that a couple of our peppermint shrimp were out and that's not like them. Then looking around more I saw that they weren't swimming well. I was able to pick them almost immediately up with my hand. I put them in my sump. Five of them! We probably have about 7 or so in there. My favorite cleaner shrimp is also acting like she can't keep still. Moving her legs all around and keeps cleaning them. She is definitely not herself! Swimming erratically Nothing has changed! Our numbers have been pretty consistent for months now. Just checked the nitrates-20 (have been for about 4 months now), no ammonia, no nitrites, and I will attach our Apex numbers. What could have happened?? The only thing that keeps coming to my mind is someone did something to our tank when we showed our house for sale this past Saturday. And I don't want to believe that! My fish all seem ok so far but it's just the shrimp right now. Any ideas??