Liquid Level Sensor and PH controlled ATO Kalk program problem

millerfishes · Apr 26, 2025

I just posted this on the Neptune Forum but thought there might be more traffic here:

I have my apex setup to turn my ATO on or off based on PH. My ATO serves to dose Kalk via a TLF Kalk Reactor. I have tried to set it up with a Neptune Liquid Level Sensor to shut off when my sump reaches a certain level.

The problem occurs when my sump hits the high limit on the Fluid Level Sensor. The ATO switch begins to toggle on and off every 1 second. I've search quite a bit but cannot seem to find what I am have wrong.

Anyone who could point out the error in my program below would have my gratitude.

Set OFF
Fallback OFF
If FeedA 005 Then OFF
If FeedB 005 Then OFF
If pH > 8.00 Then OFF
If pH < 7.90 Then ON
If Time 08:00 to 08:15 Then OFF
If Time 13:00 to 13:15 Then OFF
If Time 19:00 to 19:15 Then OFF
If Time 09:00 to 09:01 Then OFF
If LVLx5_1 > 10.0 Then OFF

Thanks,
Chris

millerfishes · Apr 26, 2025

If anyone has the same problem it got it resolved. I asked chatGPT and it understood the Apex code . The correct code for me is:

Set OFF
Fallback OFF
If LVLx5_1 > 10.0 Then OFF
If FeedA 005 Then OFF
If FeedB 005 Then OFF
If pH < 7.90 Then ON
If pH > 8.00 Then OFF
If Time 08:00 to 08:15 Then OFF
If Time 13:00 to 13:15 Then OFF
If Time 19:00 to 19:15 Then OFF
If Time 09:00 to 09:01 Then OFF

Without the extras:

Set OFF
Fallback OFF
If LVLx5_1 > 10.0 Then OFF
If pH < 7.90 Then ON
If pH > 8.00 Then OFF

With this I run my ATO pump through a Two Little Fishes kalk reactor and limit the high water level with the LVL_5 (Liquid Level Sensor). In this case the high limit is "10" for 10 inches. For you it will probably be different. So far appears to be working. I'll update this post if it fails for some reason.