My Nessies have been dying off. 4 more in the last two days. Without even testing, I'm sure some ammonia is there because of dead shrimp bodies I have been pulling out/disintigrated, but if I do another major water change, I'm not sure the shrimp can handle it and I may lose more than if I did nothing (!)....
As a desperate measure, I'm really thinking of throwing some into the new uncycled 20g set up. I'm hoping the large water body and low number of shrimp/low bioload will allow them to be healthy. I have to get a heater for the 20g first though.
In short, if I can save even 5-10, the mutation will not be lost and I can rebuild a population.
Remember the blood, sweat and tears part of selective breeding? This is one of the things that causes tears.