Vampire crabs keep dying

[Ray butts]

Hi Ray,

medication? There is no medication for crabs. The probability with fish medication to harm the crabs is big. Their metabolisms are completely different!

That the crabs seem healthy one day and the very next day lethargic seems strange to me. That might (!) be an indication for a poisoning. Did they go into the water? Do You know how much copper and chlorine is in Your water?

The medication is designed to put good bacteria in the right dose into the water specifically for shrimp and related.

The water values are good. They are:
hardness: Gh: 18°dH
carbonare Hardness: Kh: 12°dH
aciddegree: pH: 7,63
Ammoniak: NH4-: 0mg/l
Nitriet: NO2: 0mg/l
Nitraat: NO3: 5mg/l
nitrogen: CO2: 15mg/l
oxygen: O2: 5mg/l
Fosfaat: PO4: 1mg/l
Geleidbaarheid: µs: 918µs
iron: Fe: 1mg/l
Chlorine: Cl: 0mg/l