Doser in Standalone or Slave Mode?

169468 · Sep 16, 2021

I recently bought a Standalone doser and have had it running for a few weeks with no problems. I then bought a KH director with another Standalone doser and a Profilux 4.

Now I am confused as to how best to connect them all together.

I don't quite understand why, but I know that I lose the use of the doser temp/level ports when in slave mode. What are the benefits of operating them in slave mode?

Vinny@GHLUSA · Sep 17, 2021

The benefit is having a single integrated control system instead of two separate devices to connect to. Either option will work, it comes down to personal preference.

If you end up wanting to connect the KHD/Doser SA set to your P4, make sure you set that SA doser to slave mode before connecting it to the P4. Write down your dosing pump calibration info and KHD settings because you will need to copy that over in the controller.
https://www.aquariumcomputer.com/knowledge-base/how-to-switch-sa-doser-to-slave-mode/
Once that is done, you can assign it to your P4.
https://www.aquariumcomputer.com/knowledge-base/how-to-assign-pab-devices/

169468 · Sep 17, 2021

Thanks, presumably if the master ‘fails’ then everything connected to it will stop working? Or will they continue to dose with their current settings?

If they are all left independent, can they still all show on the same dashboard on GHL connect (I haven’t tried the app yet so don’t know how it works). For example, can I have KH graphs from a SA KH director, and temp/PH from an independent Profilux, all shown on the same dashboard page?

Lasse · Sep 17, 2021

FishyFishFish said:
SA KH director, and temp/PH from an independent Profilux, all shown on the same dashboard page?

You can reach each of them from the same page but each is iis own unit with its own dashboard page.

FishyFishFish said:
presumably if the master ‘fails’ then everything connected to it will stop working? Or will they continue to dose with their current settings?

If the brain fail - no one will work. the commands comes from the master unit.

Sincerely Lasse