Yesterday I checked by levels and the ammonia was at.50 so I went to the store as usual the LFS didn't have any s/w made up so I got ro water and made up a batch. The shrimp was fine yesterday he molted again on Mon. and yesterday was just hanging out under a rock, I saw him eat some food. I seem to remember reading that they don't like changes in water quality. Which is why I was hoping to do a water change yesterday. This morning he was still on the rocks. I went to the store came back and he was on the ground. It looked like he was just sitting there. I finally determined he was dead at first I wasn't sure since the water was making him move a little. My question is could the ammonia level have done him in? I checked it today before Idid my water change and it was still at .50 so it hadn't gone up any, nitrates and nitrites are also at 0. I'm just curious if it would do it in that quickly. My daughter is saying "that's ok we'll just get another" I paid $40 for that one so I'm not in any hurry to get another unless I find a cheaper one.