This moinig I found my black CBS die... , Saw onl 1 exoskeleon, other shimp were no interested.
GH is 6. Other water parameters:

PH 6.2
NH4 0
N03 20
GH 6
KH 2
TDS 230

House water TDS from sink with filer = 78

Just did a 10% water change yesterday.

Can anone help me diagnose the problem of suspected death due to moulting and what kind of interevention should I do?
Should i add minieral liquid despite GH is 6?