Amano's dying after water change. WHY?
Hoping to get some answers from the eternally helpful TPT group.
I know someone will ask kH, but dont have a test for it handy today.
Nitrate (NO3") - <2.0 ppm
Nitrite (NO2") - 0ppm
Ammonia (NH3/NH4) - <.20 ppm
pH - 7.5
Temp - 78F
I started with 5 Amanos. My tank is well cycled, and heavily planted. I have lost 3, then 1, then 1 with each subsequent water change.
I have well water, and have even over indexed on PRIME to about 150% the dosage, hoping I dont have a heavy metal issue in my water. The temp is spot on exact, and I haven't been doing more than 25% at a time. When I stop the filter, the shrimp come out of hiding and run around like mad (somewhat typical), and once I add the new water, increasingly so. I come later in the evening, or next day to find them red, and dead. I have lived in this house for 5 years, same water, had 3-5 tanks at a time in the first few years, and never had an issue. I would do 50% changes on my 70 gallon and never lose a hair on a shrimps head, never mind death.
Appreciate any help, and the wisdom shared.