I need ATK Programing code help

[Akotler82]

I'm trying to find a code so that my ATK only works from 1AM to 4PM. any ideas?

[RussM]

Add this to the end of the program for your PMUP output:

If Time 16:00 to 00:59 Then OFF

I’m curious why you want to limit the hours when ATO can happen.

It’s best to let ATO happen as needed - with the ATO programming generated by the ATK Task, it could conceivably run every hour.

Be advised that by not allowing the ATO to occur as needed, you may cause problems with the ATK running too long and going into error state when it first is allowed to run at 1am.

[Akotler82]

Great question. Im having a lot of issues with PH swings outside the normal range. Since I'm running KALK in my ATO Res, by me running it during the reverse light cycle will offset the swings. Since my evaporation rate is about a 1/2 gal per day it should be perfect.

[Akotler82]

Which part would I enter the code?

Fallback OFF
Set OFF
If Swx2_1 OPEN Then ON
If Swx2_2 CLOSED Then OFF
When On > 005:00 Then OFF
Defer 000:10 Then ON
Defer 000:04 Then OFF
Min Time 060:00 Then OFF

[zombie]

I have tried what you want to do in the past and it won't help your pH swings. If you arent extremely careful by using an OSC based approach to slowly add the extra kalk, you may even crash your tank by skipping ATO at night.

If you want to help your pH swings, you need more airflow into the tank by increasing surface turbulence or increased bubbling in skimmer. You can also help pH swings by running a stronger light in your refugium and/or more plant matter.

You might be an engineer if...You have no life and can prove it mathematically.

[rkpetersen]

Which part would I enter the code?

In order for that line to override other programming, put it at the end.