Vampire crabs keep dying

[Mr Crabs]

Hi Ray,

I had a similar problem. I got the advice also to test for copper, but i did not found a cheap test which shows up 1µg copper in 1L of water.
They told me to use Daphnia and I should describe how fast they die and their behaviour. But before you put the Daphnia into your fresh water do the water into a dish, which you have cleaned with much fresh water and let your testing water loosing its chlorine. The chlorine goes out by waiting some hours.
I hope you understand what I mean, else ask again


Kind regards

Immi