I need an explanation to what has happened to me ... today, some beautiful Black Panda came home, they were all alive and very active, the water temperature inside the bag was 19.8 degrees Celsius so I started the acclimation with the temperature leaving the bag floating in my tank but open for oxygen exchange (the bag was a breathing bag, is this an issue? It was open…).
In just 30 minutes the water reached 23.5 degrees (could be this an issue?) so I started with the drip to match the parameters of the water and only half an hour later there was a dead shrimp, after this death all start to die in a period of 2 hours.
The substrate is Glas Garten (PH 5.8 max), I use Bee Shrimp GH+ (TDS 130 - GH 6), I checked before Ammonia, NH2 and NH3 and all were in zero. The shrimps came with a PH 6.8, GH 6, TDS 155.
Two weeks ago, I was doing some maintenance in the tank and I broke one small hydrogen thermometer dropping all the small metal balls in the water, so immediately I sucked all the balls with a pipe removing also a big amount of soil. Could this thermometer poison my water? I took some of my Neocaridina shrimps in a bag and I added this water and they look fine, why the pandas died?
Should I set up the tank again from zero?