>>>> špricer.
>>>
>>>Ouch. I'm a bit blind on the red sensors - this is not readable. What is wrong with black-on-white .... grumbling
>>>
>>>špricer sounds a bit like german "Spritzer" .
>>>
>>>Water from the tap does the trick. :)
>>
>>You have carbonated water on the tap? It's been decades since I last went to Germany...
>
>A bit chlorine, carbon dioxide etc. At least it is more then the partial pressures at 20°C allows. It is out-gassing.
>I have problems with it on the fish tanks...

Imagine what the fish think! (OK, not very much).