Esiwasser pastel white turned gray

[pesbra]

Hello, about a month ago I tore down my custom waterloop for cleaning and changed my coolant to use Esiwasser pastel white, however after about a month I noticed today that the white collant turned gray. Should I be concerned? what could cause this?

Thank you for your help.

 

[aclogic]

From the description:
----
Attention
The Alphacool Eiswasser Pastel is a pure show liquid which is not suitable for continuous operation. We recommend use only over the period of 2 weeks. The water circuit should be in operation for at least one hour daily to avoid deposits of paint particles.
----

 

[Thomas_S]

@pesbra, I think that answers the question!? @aclogic, thanks for explanation! ;-)