I  want to controll a Calcium reactor by the pH interfaz and only during a few hours.

Let me explain.

I have the Co2 valve connected to the power unit in the plug “A”. Then I insert the program to start at 16:00 and stop at 23:00. Also I am controlling the value of the pH, if this value is higher than 6.5 the plug “A” is setted to on. But this is happening also during the period that I want to have the plug A stopped.

How can I solve this problem?

Thank you.

Hi Sympsodon,

the probe programs have the priority on the timer programs, the program you have to do is the following:

first you have to tell the system the time it has to work, as you made you have to set a timer program with the on time at 16:00 ad off time at 23:00.

Now you have to tell the system to leave the plug off thill the pH is lower then the value of 6.50.

In this program the pH will be opened between 16:00 and 23:00 and only if the pH is higher then 6.50.

Bye

The way I run mine is to use the "Curve" function on the pH program. This allows you to change the reference value at different times of the day - so for your situation, you can specify that the pH reference value is 6.5 between 16:00 and 00:00 (2 hour steps I'm afraid) and the rest of the time give it a value of 8.5 - i.e. a value it will never get higher than.

Hope that helps.

-Ian