I did not add the substrate to an established tank. I started the tank with the substrate. My PH out of the tap is 6.3.
And the story takes a turn... Read up on how to keep dwarf shrimp and inverts in general. Water conditions are paramount and pristine is the name of the game. In failing to do so, you are just wasting time, money and killing otherwise happy and healthy souls.
We all want to rush into setting up a tank and one may get away with accerating a cycle in larger tanks but hardly is the case for nanos