im in a panic. Yesterday I got home from work and about 100 were dead and more dying. Today whats left is not doing well either. I do not run co2, use ferts. I did a water change as I have done every week since I set this tank up 6 months ago. No new fish, no new plants, no new stones NOTHING. I treat my water with prime as I always have. No hands in tank etc. My ammonia levels are great, nits kh, ph all where they have been since ive started and the shrimp have been in for over 4 months. My tank temp 77-78. I did 5% water change yesterday because i had to remove all the dead ones. WTH do i do?