Programming for Kalk dosing help

[lacrosseboss18]

I’m looking to dose Kalk at night. I have a Kalk Stirrer and a kamoer dosing pump.
I would like to control the dosing pump by dose from 10pm to 10am
Have it shut off if pH goes above 8.5
Shut off if Alk <8.6
Thanks

 

[SuncrestReef]

You didn't mention what kind of controller you have. Apex? GHL? Hydros? Other???

 

[lacrosseboss18]

Sorry Apex

 

[lacrosseboss18]

will this work?

If Time 22:00 to 10:00 Then ON
If pH <8.5 Then OFF
If Alkx8 <8.6 Then OFF

 

[SuncrestReef]

Sorry Apex

OK, one more question: Do you want the dosing pump to run continuously from 10pm to 10am when within the alk ad ph range, or dose it on and off between those times to deliver a certain amount per hour?

Also, my understanding is that Kalk will increase alkalinity, not reduce it, so I assume you want to turn off the doser if alk is greater than 8.6, not less than 8.6 as you posted above.

If you just want it to run non-stop between the time and probe readings, then this will work:

Fallback OFF
Set OFF
If Time 22:00 to 09:59 Then ON
If pH > 8.50 Then OFF
If Alk > 8.60 Then OFF

If you want to reduce the flow between 10pm-10am, then you'd need to use the OSC command to turn it on and off repeatedly on an appropriate schedule. Let me know your preferences.

 

[lacrosseboss18]

Thanks.
I used the incorrect <>
I was thinking to run it constantly between those hours. I can always adjusted as needed.
thanks again!

 

[lacrosseboss18]

for the time. Would I change it to
22:00 to 10:00

Would this be on at 10pm and off at 10am?
Fallback OFF
Set OFF
If Time 22:00 to 10:00 Then ON
If pH > 8.50 Then OFF
If Alk > 8.60 Then OFF

 

[SuncrestReef]

for the time. Would I change it to
22:00 to 10:00

Would this be on at 10pm and off at 10am?
Fallback OFF
Set OFF
If Time 22:00 to 10:00 Then ON
If pH > 8.50 Then OFF
If Alk > 8.60 Then OFF

Yes, I edited my original post because I first listed it as 10am to 10pm, but then realized you wanted 10pm to 10am. This is the corrected code:

Fallback OFF
Set OFF
If Time 22:00 to 09:59 Then ON
If pH > 8.50 Then OFF
If Alk > 8.60 Then OFF

This turns it on at 22:00 (10pm) and turns it off at 10am. The If Time command values are inclusive, so I listed 09:59 because that means it will remain ON through 09:59:59, then turn off at exactly 10:00:00 am.

 

[lacrosseboss18]

Appreciate the help and explanation

 

[Wagtribe]

Yes, I edited my original post because I first listed it as 10am to 10pm, but then realized you wanted 10pm to 10am. This is the corrected code:

Fallback OFF
Set OFF
If Time 22:00 to 09:59 Then ON
If pH > 8.50 Then OFF
If Alk > 8.60 Then OFF

This turns it on at 22:00 (10pm) and turns it off at 10am. The If Time command values are inclusive, so I listed 09:59 because that means it will remain ON through 09:59:59, then turn off at exactly 10:00:00 am.

From 10pm to 10am it would continue to add Kalk water to sump until it reaches max (8.50). Would it be stable enough to carry into the 11am to 9pm with out a drastic drop in pH? Wouldn't it be ok to set it up:
Fallback OFF
Set OFF
If pH > 8.50 Then OFF
If pH < 8.20 Then ON