how to turn off skimmer during dosing?

[90reefernyc]

Is there a way to turn off the skimmer during auto dosing? Maybe with programmable logic or something like that ?
Thanks Jimmy

[Matthias]

assuming your doser is timer 1:

then your skimmer should be timer 1 inverted

[marios]

Hi Mathias,

What if I want to perform this manually. Meaning turning off the skimmer for 2 hours by pressing a button. I guess maintenance or feeding pause?