Profilux II plus aquarium controller

[Matthias Gross]

"Do they have to be 1-4?" - No, you can assign any numbers for digital powerbars and dosing units you want.

"can i put them after the last power bar, so say 13-16?" - yes

Hint: With firmware 3.05 you can program powerbars and dosing units (startnumer or initial state) with ProfiLuxControl 3.0.5.0