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melev

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Yesterday I posted up the latest water parameters from my tank. Here are a couple of graphs to show how the Aqua Controller tracks some variables.

ORP: I've been dosing Hydrogen Peroxiide (3%) each morning, so the ORP rises sharply and then drops down over the next few hours. I'm dosing it to kill dinoflagellates, and that dose is 1ml per 10g actual water volume. This is done daily for 7 days, and today is the last day. It appears to have worked.

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This other graph is for pH.

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And here's the temperature graph. I recently lost connection between the AC3 and the heaters, and you can see how it has dropped off because of it. I think a replacement of the ends of the wire connecting the modules will resolve it, and I hope to do that in the next few days.

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Categories
Water Chemistry

Comments

  1. Reefski's Avatar
    very interesting. do you use ozone?
  2. melev's Avatar
    No, I don't use UV or Ozone.
  3. Jnarowe's Avatar
    VERY interesting.
  4. Midnight's Avatar
    Does the peroxide effect PH at all Marc?
  5. melev's Avatar
    I don't know for sure. I'd think it would elevate it with two oxygen elements, but it might actually depress it some since I'm barely hitting 8.3 each day.
  6. NEReef's Avatar
    Thinking back a few years to my college chem classes I remember hydrogen peroxide is a weak acid so that probably accounts for the pH drop. If u figure that when it breaks down H2O2 yields hydroxyl free radicals OH... then pOH is the inverse of pH so the higher the OH concentration the lower the pH. Seems to make sense anyone seeing something I am missing?