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Thread: Programming help for a simple dosing

  1. #1
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    Programming help for a simple dosing

    Hi All,

    i want to dose in small amounts based on my PH something along the lines of

    Fallback off
    if PH > 8.5 then Dose PHDown for 10 seconds.
    Wait 15 minutes then check PH again

    I prefer not to does until it reaches a certain PH for various reasons so prefer to does for a set time then wait


    Does anyone know how to code that for the Apex? The user guide doesn't go into to much detail

  2. #2
    Frequent Contributor zombie's Avatar
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    While it can be programmed to do that, I would advise doing so in 99.99% of cases. What is the reasoning behind wanting to do this?

    Sent from my SM-G965U using Tapatalk

  3. #3
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    Currently theres a delay in how long it takes the PH probe to pickup my dosing. so it often overdoses. If i dilute the solution it works properly but i constantly have to keep mixing solution. Hence if i do it this way i can keep stronger solution and it would be just as accurate as the lower concentration.

    I understand the risks so if i nuke my tank its a qt anyway so worth a try for easy maintenance which is what this is about

  4. #4
    Frequent Contributor zombie's Avatar
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    I would think you would be better off just spreading your dosing out into more frequent smaller doses.

    Sent from my SM-G965U using Tapatalk

  5. #5
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    Thanks for the advise but i would like to do it this way, im just after the code, i will continue to search until i can find it.

  6. #6
    Frequent Contributor zombie's Avatar
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    The code would be what I show below, but I can't stress enough how bad of an idea I think this is. You should solve the root problem rather than attempt a bandaid that could crash your tank.

    Fallback OFF
    OSC 000:00/000:10/014:50 Then ON
    If pH < 8.50 Then OFF



    Sent from my SM-G965U using Tapatalk

  7. #7
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    Thanks for this. Like I mention this isn’t my main display or anything. Just a little test I’m running. No big deal if it crashes.

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