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Ro wasting alot of water

Discussion in 'General Discussion' started by ChapmanFM, Dec 22, 2015.

  1. Dec 22, 2015 #1
    ChapmanFM Fort Madison, IA

    ChapmanFM

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    Fort Madison, IA
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    Just changed all teh filters on my RO DI system, it is rejecting about 3/4 of the water, is that normal?
     
  2. Dec 22, 2015 #2
    abower Ryan, Ia

    abower Well-Known ReefKeeper

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    Yes. The rejected water is what takes the particles away from the RO membrane. Without this flushing the membrain would plug just like your sediment filters and carbon blocks
     
  3. Dec 22, 2015 #3
    Dave Des Moines Area

    Dave Experienced Reefkeeper

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  4. Dec 22, 2015 #4
    Fence13 Des Moines

    Fence13 Experienced Reefkeeper

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    If you have the BRS one they have an addon that will double the amount of water used (adds another RO membrane) and can help reduce some waste.
     
  5. Dec 22, 2015 #5
    Armydog

    Armydog Expert Reefkeeper

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  6. Dec 22, 2015 #6
    xroads La Porte City, IA

    xroads Veteran Reefkeeper Vendor

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    Two common causes for excessive waste water.

    First is very cold water

    Second is low pressure. If you add a booster pump, you can usually cut it from 4 to 1 to 1 to 1.
     
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  7. Dec 22, 2015 #7
    blackx-runner Cedar Rapids, IA

    blackx-runner Administrator Website Team Leadership Team

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    I think 3:1 - 4:1 is typical for most RO systems. As mentioned there are ways to make it more efficient. Some people also save the waste water and use for other purposes. Washing machine, watering plants etc.
     
  8. Dec 22, 2015 #8
    Bud West Des Moines, IA

    Bud Loves Bacon Website Team Board of Directors Leadership Team GIRS Member Vendor

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    I'll have to measure my waste water, I added a booster pump and my production water rate skyrocketed
     
  9. Dec 22, 2015 #9
    FishBrain New London

    FishBrain Expert Reefkeeper

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    Mine waists a lot as well probably in the 4 to 1 range. I use to put the waist water line in the washer. But after forgetting it a few times and causing a minor flood I stopped doing that. I'm planning on adding the brs upgrade to help.
     
  10. Dec 23, 2015 #10
    Zach Coralville, Iowa

    Zach Well-Known ReefKeeper

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    Did you change the RO filter as well or just the prefilters?
     
  11. Dec 23, 2015 #11
    ChapmanFM Fort Madison, IA

    ChapmanFM

    97
    Fort Madison, IA
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    changed them all
     

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