Were the shrimps you bought already adults? Other shrimp or snails could be eating the dead ones, or they were the back of your tank out of sight and just decayed
Regarding tap water, short of cutting your water with R O, starting gradually and testing params as you go, till you are happy, but imo even if params are off, the shrimp will prefer stabillity rather than a yoyoing which will cause even more stress
To lower nitrate, use lots of floating plants, elodea densa, brazilian pennywort etc to help soak up the nitrates
Thread bump. Can Cherry Red Shrimp handle planted tanks with injected Co2 and E.I Fertilisation?
Absolutely, Don’t mind co2 and EI, along with high non organic nitrates (what’s in the tap and plant food). No problem
They’ll only have an issue, just like amano shrimp with ammonia from excess food, waste etc.
They love big water changes, Are rock hard and will live in the filter if sucked in.
Just bung them in your tank, happy days!
If you plants were grown in the EU they should be safe, and the supplier can tell you for sure. If imported from outside the EU they are treated with pesticides to meet the import regulations; in that case there are ways of cleaning or neutralising them, but as they are already in your tank you will just have to do water changes to dilute them.
I can't see the front of the labels in your pic; if you Google the grower's name you should be able to get the info.
|M||Lead and red cherry shrimp||Inverts||4|
|L||Amano shrimp preying on Cherry||Inverts||12|
|T||It was going so well.... Cherry Shrimp die off||Inverts||48|
|My 200 litre planted Red Cherry Shrimp Tank||Inverts||7|
|Easiest cherry shrimp to care for and breed.||Inverts||17|
|Red Cherry Shrimp and Meds for fish||Inverts||2|