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There is something somehow implicit in your observations and that is worrying me. If the speed of the dosing heads depends upon the type of head cover, that may mean that a worn out cover changes the...

Hi Vinny, there is something I don't quite understand. The pump producing the noise is the internal pump, the one mixing the sample water with the reagent in the internal cell. Can you modify the...

Yes, I have removed the blue caps several times and adjusted the white cilindres. After doing that the pump works fine for several days and then, suddenly, one day it stops working. However I have...

Hi Vinny. I'm referring to both. Pumps no 1 and 3 of the doser 2.1 that comes with the KHD and the KHD mixing pump which is making an ugly noise when it starts to run.

The KH Director is a good tool to measure and control a very important parameter in reef aquaria, such as alkalinity. In general is a well designed monitor, but I have to complain about certain...