Shrimp in General...
Okay, this has in actuality very little to do with amano shrimp, but...
When I went to the LFS today, I noticed a new shipment of hundreds of ghost shrimp. I mentioned my inability to keep them alive for very long to the resident "fish expert" employee. He said he could not test my water for copper (per OrionGirl's suggestion) but he did not think that our area's water supply has a copper problem. He said that ghost shrimp do better in slightly brackish conditions. He does not sell any amanos (which I want badly) but they normally cost about $3 each. The only shrimp he said he could truly recommend for freshwater was the $10 Singapore shrimp.
He suggested I buy saltwater mix for my tank and use it in diluted quantities, but I did not want to risk hurting my betta, so I settled for regular aquarium salt, and he said that it was an acceptable alternative. Since amanos and ghost shrimps are pretty similar, maybe salt would be good for them, too. Has anyone heard of this before?