If they were doing fine in the original tank, and doing poorly in the new tank, I'd move them backWill take your advice re testing kit, thanks.
Anyway what do you think, should I move the shrimp back to the old tank for now? Or could I keep doing water changes and observe them to see if they improve over the next few days? I'm not sure how long they can be in this semi-dormant state.
In post #10 above, you stated that nitrItes in the original tank are reading 30...that's why I asked if you are confusing the two tests ('trItes and 'trAtes)
Get that new kit, so that we can get an accurate reading on water params, and we'll take it from there