Salinity control

Hello,
I currently have the following settings on my profilux 3ex which are working fine so far :)

Level1 ATO& Water change
Level2 Not enabled
Level3 Ato Top Of

Timer4 : from 3:00PM to 9:00PM ( Fill Tank With RO/DI Water )

Programmable logic

G1: AND Water1 Water change ( inverted )
G2: AND Water1 Water change
G4: AND Water3 Timer4

Socket functions

S1: Pogrammable logic4 ( Fill my 250Lt tank with RO/DI water once a week )
S4: Programmable logic2 ( fill sump with fresh salt water )
S5: Programmable logic1 ( fill sump with RO/DI Water )
S16: Water2 ( Water drain from my sump )

What i want to do is when the level sensor triggers to fill my sump with RO/DI water .... i want it to check and see if salinity is ok first.... if above hysterysis ok add RO/DI water But if below hysterysis i want it to add from my salt water tank....
This way after a water change if the salinity is disturbed and out of hysterysis then the top of of the sump will be either from the salt water tank or from the RO/DI tank....

Is this possible??

regards

christos

Should be no problem just add another three Programmable logic operations

G5: AND G1 Conductivity Decrease
G6: AND G1 Conductivity Increase
G7: OR G2 G6

And Set
S4 : Programmable logic5
S5: Pogrammable logic7

Thank you Thank you Thank you :) :) :)

The more you play with this controller the more you really love it :) :)

cheers

christos