So, to clarify for the next poor sap reading this ....
When programming in myReef, you need to change the FUNCTION of the unit plugged into the PC4.
In my case, it is a pump and I had originally set it to Pump
I changed it to Switch, and then I was able to set the On when / Off when
Hope this helps someone else :smile:

This is definately going to take more work tomorrow

I obviously can't set my heaters as a switch
I'll need to set up an alarm for them

What is the heater got to do with switch? Isn't the Temp probe take care of that?

If I change, say, channel 4 on PC4 #2, from Heater to Switch, I lose the temp control ....
What am I missing ?

I want the first switch we just programmed to turn off not only that pump, but also the heaters and the skimmer all at once.
Then I want to set a re-start delay for the skimmer of, say, 30 seconds

BTW, I read every post on the DA site, and this is still not making total sense

Just to be safe, don't mess around with it at night. Otherwise you will wake up with a nightmare. Double check everything before going to bed.

That is good advice :mrgreen:

Oh ya, I'm not going to make any major changes I can't watch for awhile.
I'm feeling comfortable enough to sleep tonight with the overflow killing the return pump.
I do, however, want to get the rest of it set up so I don't overheat the sump as the Temp probe is in the overflow.

I suppose I could simplify things by having the Temp probe in the sump, but I thought I'd like to get the temp reading closer to the tank than that.
Guess I'll have to think that over now .......

This would take care of any issues with the control for the heaters, wouldn't it ? :doh:

I'd still rather keep the Temp probe in the overflow box .............