They died off gradually as far as I can tell, it didn't seem to be related to water changes. Never saw much evidence of moulting so I guess that could fit with a mineral deficiency? I think I'll try the rainwater and add minerals, might get more consistency that way. Any recommendations for...
I have a small tank that holds around 30L (I think that's about 5.5g?) and set it up about a year ago as a shrimp tank. I cycled it without any problems and put about 15 red cherry shrimp in but haven't had any joy - they never bred and over the year gradually died one by one so that now I only...