ATO w/kalk reactor programming help

[OE GEO]

Hello, I apologize in advance because I tried to read as many forms as possible to answer my questions, but unfortunately I couldn’t seem to find a clear answer of a correct program for my ATI..

I am looking to have my ATO off between noon and midnight.
I am trying to program my ATO so it will come on for 10 seconds and the. Turn off and wait 5 min before turning on for another 10 seconds. I would like to have it do this from midnight to noon.

My desire is to use this through my reef octopus kalk reactor and help stabilize pH a bit...

(Down the line I might install a separate PMUP that would be used during the day not going through the Kalk reactor.... but this man guy not leave enough demand for ATO water to impact the ph...)


Here is my program so far, but it is actually switching my ATO off during the day.... and it does t seem to turn back on....

Fallback OFF
Set OFF
If Swx7_1 OPEN Then ON
If Swx7_2 CLOSED Then OFF
Defer 001:00 Then ON
Defer 000:10 Then OFF
If Time 12:00 to 23:59 Then OFF
Min Time 000:07 Then ON
When On > 000:10 Then OFF
If pH > 8.30 Then OFF
Min Time 010:00 Then OFF

Any help, suggestions or advise would be helpful... thanks. Geo

[rkpetersen]

The When On statement isn't used to stop a pump in the normal fashion. It's a safeguard. If it triggers, it creates an error condition which then turns the ATO off until manually reset.

This will run your pump as you request. However it will no longer dispense water in response to water level changes.

Fallback OFF
OSC 000:00/00:10/004:50 Then ON
If Time 12:00 to 23:59 Then OFF
If pH > 8.30 Then OFF

If you want to also have it pump or not pump in response to water level changes, you can add this after the OSC command, but it will lead to variable amount and timing of kalk being added to your tank, with the possibility of adding too much at once.

If Swx7_1 OPEN Then ON
If Swx7_2 CLOSED Then OFF
When On > 000:30 Then OFF

[OE GEO]

Thank you for the response, would it make a difference if line 2. “OSC...” & line 3 “If time” were reversed? It seems like the ATK is cycling on and off even between 12PM and midnight right now......

thanks,
George

[zombie]

Thank you for the response, would it make a difference if line 2. “OSC...” & line 3 “If time” were reversed? It seems like the ATK is cycling on and off even between 12PM and midnight right now......

thanks,
George

No. That order needs to be the way rk posted. The reason your ATO is still cycling during the day is if you added the Sw1 OPEN line that rk said was optional to maintain water level during the day.

If you want it to stop completely during the day, the code should be this

Fallback OFF
OSC 000:00/00:10/004:50 Then ON
If Time 12:00 to 23:59 Then OFF
If pH > 8.30 Then OFF
If Swx7_1 CLOSED Then OFF
If Swx7_2 CLOSED Then OFF

However, that on it's own has the problem of zero failsafes. To improve on that, a stuck switch detection VO should be used and turn the code into this (3 hour timing is a placeholder. Actual timing should be 1.5-2 times how long it typically takes for the low switch to close after midnight)

ATOstuck
Set OFF
If Swx7_1 OPEN Then ON
If Time 12:00 to 23:59 Then OFF
Defer 180:00 Then ON

ATO
Fallback OFF
OSC 000:00/00:10/004:50 Then ON
If Time 12:00 to 23:59 Then OFF
If pH > 8.30 Then OFF
If Swx7_1 CLOSED Then OFF
If Swx7_2 CLOSED Then OFF
If Output ATOstuck = ON Then OFF

Email
If Output ATOstuck = ON Then ON


An even better way than above is to do a reduced dose during the day to help support water level without affecting pH as much as you want during night.

DayKalk
OSC 000:00/000:10/059:50 Then ON
If Time 12:00 to 23:59 Then OFF

NightKalk
OSC 000:00/000:10/004:50 Then ON
If Time 00:00 to 11:59 Then OFF

ATOstuck
Set OFF
If Swx7_1 OPEN Then ON
If Time 12:00 to 23:59 Then OFF
Defer 180:00 Then ON

ATO
Fallback OFF
If Output DayKalk = ON Then ON
If Output NightKalk = ON Then ON
If pH > 8.30 Then OFF
If Swx7_1 CLOSED Then OFF
If Swx7_2 CLOSED Then OFF
If Output ATOstuck = ON Then OFF

Email
If Output ATOstuck = ON Then ON

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