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If Someone Is Interested, The Calculator Is Wrong...

Discussion in 'Rotala Butterfly Support & Feedback Forum' started by Mike Workman, Feb 8, 2021.

  1. Mike Workman

    Mike Workman Subscriber

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    Be happy to walk that someone through some illustrative examples via phone or email.

    I think this screen says a lot:
    upload_2021-2-7_12-46-42.png

    Dosing 1 ppm every 4 days shouldn't cause the concentration to increase every day. Plant uptake of .20 ppm /day should cause the concentration to decrease daily, only increasing on days we dose. As should the daily 4.6% water changes cause the concentration to decrease.

    Initial Concentration ppm 3
    Dose ppm 1
    Dose Interval (days between) 4
    Plant uptake per day 0.2 ppm
    Plant uptake per hr. 0.008333
    Water Change Percentage 4.6%
    Water change interval (days) 1

    The concentration over time should look like this:

    upload_2021-2-7_12-53-16.png

    My results are available in hours, this causes the lines to have a slope to them as there are multiple points per day (6).

    If I am wrong I would appreciate any corrections. Thanks

    upload_2021-2-7_12-40-25.png

    upload_2021-2-7_12-48-18.png
     
    #1 Mike Workman, Feb 8, 2021
    Last edited: Feb 9, 2021
  2. fablau

    fablau rotalabutterfly.com
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    Thanks for your post and sorry for my late reply. Yes, the calculator is definitively wrong. Let me see if I can have a look at it in the coming days.... tanks again!
     
  3. Seattle_Aquarist

    Seattle_Aquarist Guru Class Expert

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    Hi @fablau

    Also, I believe the Plantex CSM analysis is missing one of the nutrients, magnesium. Plantex states that 1.5% of the mix is magnesium but when I do a calculation the results do not show the magnesium. BTW, the calculator is great!
    -Roy
     
  4. fablau

    fablau rotalabutterfly.com
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    Thank you Roy for your feedback. Actually, I see the Mg component in the results for Plantex CSM+B. Am I missing anything else?

    Thanks again.

    Fab.
     
    #4 fablau, Feb 12, 2021
    Last edited: Feb 12, 2021
    Seattle_Aquarist likes this.
  5. fablau

    fablau rotalabutterfly.com
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    Ok, try again and let me know if it works correctly now ;)

    Thanks for your feedback!

    All the best,

    Fab.
     
  6. Mike Workman

    Mike Workman Subscriber

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    It seems to work correctly now - the results pretty much match my simulations, in detail and the bigger overall picture of what should be happening.

    Thanks. Glad I made the comment I wasn't sure anyone would care! Not sure if this is the same as the Zorfox site, but his is wrong too.

    M
     
  7. Seattle_Aquarist

    Seattle_Aquarist Guru Class Expert

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    Hi Fab, Yes, it is in the Plantex CSM+B but I was looking at "CSM CHELATED SECONDARY MICRONUTRIENTS" is that different than Plantex CSM?
     
  8. fablau

    fablau rotalabutterfly.com
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    You are very welcome, no problem. The RotalaButterfly project is not related to Zorfox's even though both may use similar base codes for the calculations, hence sometimes they give the same results (and errors). RotalaButterfly was actually derived from old Wet's calculator we all used so much in the past, and it was reworked by me and Jason.

    Please, keep the feedback coming, whenever I can, I'll fix any bugs and issues!

    Thanks again :)

    All the best,

    Fab.
     
    Hanuman likes this.
  9. fablau

    fablau rotalabutterfly.com
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    Ok, sorry for the misunderstanding. That'll give you just "micronutrients" compounds, therefore Mg is out (that's a macronutrient). Does this make sense?

    Thanks again :)

    All the best,

    Fab.
     
  10. Zeus

    Zeus Lifetime Members
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    You might wont to give the IFC Fert Calculator a try, lots of new features, plus tallys up all the salts you choose/use, does target ppms or grams etc plus clones lots of commercial ferts and popular regimes, but not for noobs ;)
    upload_2021-2-19_22-13-33.png
     
    fablau likes this.
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