Dosing at different times

[Matthias]

Q:
the profilux liquid doser; mine is set to dose 2 times a day from 2 pumps..
Is there anyway to control the times it doses.. it is less than optimal to dose micronutrients containing iron together with macronutrients containing phosphate since Fe & PO4 can percipitate and thus become useless to plants. This is especially important if one doses inline.
Can this be done?
A:
the dosing control starts dosing for the different pumps every 7.5 minutes, for example pump 1 doses at 0:00:00 and pump 2 doses at 0:07:30 and pump 3 at 00:15:00.
If one dosing is shorter 7.5 minutes there will be no overlapping.
It is also possible to dose at certain times. Then use a timer rather than the built-in dosing function.

[larryfl1]

can i use this logic for dosing but have an overide based on ph...

so use the dosing rotation of 1 and 2 but only if ph is below a certain value...

also i dont want doeser 3,4 in the same unit affected by this schedule...it is discreet dosing from 1,2

thanks

Larry

Q:
the profilux liquid doser; mine is set to dose 2 times a day from 2 pumps..
Is there anyway to control the times it doses.. it is less than optimal to dose micronutrients containing iron together with macronutrients containing phosphate since Fe & PO4 can percipitate and thus become useless to plants. This is especially important if one doses inline.
Can this be done?
A:
the dosing control starts dosing for the different pumps every 7.5 minutes, for example pump 1 doses at 0:00:00 and pump 2 doses at 0:07:30 and pump 3 at 00:15:00.
If one dosing is shorter 7.5 minutes there will be no overlapping.
It is also possible to dose at certain times. Then use a timer rather than the built-in dosing function.

[Matthias]

yes, use the programmable logic:

logic 1: dosing 1 AND pH upwards

then assign function "prog logic 1" to the socket

[larryfl1]

i assume i assign it to pump 1 and pump 2
but how do i get them to not dose at the sametime? it seems like to me they will dose same time based on ph being called to raise...

[Matthias]

the dosing program starts pumps 1...8 at different times

[larryfl1]

will both pumps 3 and 4 be completely seperate dosing then and not tied to the ph function?

[Matthias]

if you use the AND function then the socket will only be powered if both events occured: dosing AND pH