conductivity program

[gandolf8]

I want to setup a program to do water changes with conducticity prob.

PM4$B4
PM5$B5


If cond >52 Then PM4 ON
If cond < 51 Then PM4 OFF
If cond > 52 Then PM5 OFF
If cond < 51 Then PM5 ON


would this be right. thx.

[clp]

I'm not sure how you are going to do water changes by just measuring conductivity. Most have float switches connected to the controllers inputs, and they signal which pumps to turn on/off.

Curt

[gandolf8]

if the conductivity is less than 52 the float switch for salt water comes on and if more that 52 the r/o water float switch come on. This would give small water changes.