Fluid remains within the kh at the end of the test

[Zisu-reef]

Is at the end of the kh test left, liquid inside the kh, the dosing pump of the wast does not take out all the liquid

[Vinny]

A few cm of liquid at the end of the waste water tube is OK. Anything more than that and the pump head should be recalibrated, preferably using a digital scale for best accuracy.