How much Ozone to dose

Discussion in 'General Discussions and Advice' started by Jonathan Radloff, 1 Oct 2014.

  1. Jonathan Radloff

    Jonathan Radloff

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    Hi Guys.

    I have a Resun RSO -25 Ozone processor capable of dosing 0.25G/Hr. My system's Total Water volume is about 420 Liters. Now My skimmer is a Bubble Magus Curve 5 Capable of 300l/h of air intake. The Ozune generator is maufactured to run 2 hours a day, twice a day so that is 4hours per day.

    What would be the safe way to dose the ozone as I do not have ORP sensors etc.

    I was thinking of maybe running it at Half the capability for half an hour twice a day by putting the unit on a timer? the Ozone outlet will be joined via a T-joint below the air intake silencer of my skimmer.

    Or if someone could provide me with the maximum safe dosage I would be forever greatfull.

    Thanks.

    Jonathan
     
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  3. butcherman

    butcherman Moderator

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    What is the goal of using the ozone?

    Water clarity or to raise ORP?
     
  4. OP
    Jonathan Radloff

    Jonathan Radloff

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    I would say mostly ORP, I am quite new to Ozone so trying to get more info, Water Clarity is good imo but since i want to add more SPS in future I can also do with more clarity, Mainly ORP,
     
  5. butcherman

    butcherman Moderator

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    for orp you will need an orp monitor.

    for water clarity you can run it a few min 2 times a day
     
  6. OP
    Jonathan Radloff

    Jonathan Radloff

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    ok thanks, at what level can i run it?
     
  7. flappy

    flappy

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    I would not run this without a controller at all....
     
  8. carlosdeandrade

    carlosdeandrade

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    Get a redox monitor and probe. O3 is very dangerous if left unattended. Any reading above 350mv is great, but keep it below 430mv. It's even more oxidizing than Chlorine. TRUST ME, IT WILL KILL EVERYTHING IN YOUR TANK IF YOU DON'T CONTROL IT!
     
  9. Glynn

    Glynn

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    250mg is a lot for 420 liters of water ...although that said only the top German ozone units deliver what they say on the box...you need to monitor or run for short periods and use water clarity as your control indicator.
     
  10. flappy

    flappy

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    playing with fire in my humble opinion...Ozone is extremely volatile and without a controller you are guessing....in 420 liters you can wipe out everything very quickly.....not worth the risk....
     
  11. OP
    Jonathan Radloff

    Jonathan Radloff

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    Thanks guys, for time being i will run it just for a water clarifier and once i decide to go for an upgrade on my tank i will go all out with probes and controllers etc.

    I will run it on the lowest output for half an hour twice a day and then see how it goes.
     
  12. carlosdeandrade

    carlosdeandrade

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    I don't use any commercial ones, use one that is made by a proper Ozone company. I personally think that the ones we sell in LFS are really underrated and overpriced.
    You also need to have dry air flowing through your corona discharge as moisture damages them. Many O3 generators stop producing ozone within a year because of our moist air. Gauteng in summer and WC in winter and Kwazulu Natal, well, we won't speak about their lekker humid, hot air.
     
  13. carlosdeandrade

    carlosdeandrade

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  14. DeanT

    DeanT Dean

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    As a guideline, the ozone production should be between 5 and 15 mg /hr per 25 gallon (100 liter) of aquarium water.
     
  15. Gary Bourn

    Gary Bourn

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    @carlosdeandrade can you recal the Product name and model that you bought?
     
    Last edited by a moderator: 26 Nov 2015
  16. carlosdeandrade

    carlosdeandrade

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    It's a normal O3 generator with a glass tube corona discharge. You can chose from all different sizes. They have huge ones there. Give them a call and speak to Emmanuel, he's the tech guy there and very helpful.

    They are not good looking units, but they do their job. You could also get a control switch/dial added to the unit. You still need and probe and controller.
    I also use the dryer balls to dry the air around my generator, I used to use silica beads, but these would only last a few days. The dryers are available at Pick n' Pay or builders.
     
  17. leslie hempel

    leslie hempel Moderator MASA Contributor

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    basic dosage of ozone mg per lt ?anyone. running manually until late orp controller arrives..
     
  18. viper357

    viper357 Admin MASA Contributor

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    No clue so I googled it for you because I'm bored :p

    In most of our aquarium systems 5-15 mg/hr/100 liters is sufficient amount to get proper disinfection. A more accurate rule is 1.5 mg for 1hr/day/ 1 gr of fish weight. If the purpose of the ozone is to treat the dissolved organic matter, the optimum rate should be according to daily feed rate. It is recommended 10 mg ozone per gram of fish food, to reduce accumulated organics.

    taken from http://kb.marinedepot.com/article.aspx?id=10541
     
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