How bad is my water?

Discussion in 'Water Chemistry' started by mdbostwick, Nov 20, 2014.

to remove this notice and enjoy 3reef content with less ads. 3reef membership is free.

  1. mdbostwick

    mdbostwick Vlamingii Tang

    Joined:
    Feb 21, 2013
    Messages:
    1,899
    Location:
    Canton OH
    Filling up my RO/DI top off tank today I turned on my inline tds meter to find it at ~25 ppm. So obviously something is no longer good. My guess is the resin which i replaced not very long ago which i bought from one of our supporters so it will remain nameless.

    My first question is, Is this water worth keeping? I don't know how bad is too bad, and i need top off water daily. So should I buy some distilled jugs until i can get my problem solved?

    Second, Should i only be looking at replacing the resin of do i need to check and see what my RO is putting out? I am not sure what that should be at either so some numbers there would be of great assistance as well. I am pretty positive the resin needs replaced for sure and i am planning on buying spectrapure resin this time around but am not sure what type i need.

    And from what I understand, HE, is just like Beetlejuice and if you say HIS name 3 times on a question about water, he magically shows up. So here it goes, AZDesertRat, AZDesertRat, AZDesertRat!
     
  2. Click Here!

  3. mdbostwick

    mdbostwick Vlamingii Tang

    Joined:
    Feb 21, 2013
    Messages:
    1,899
    Location:
    Canton OH
    Also the PPM going into the unit is 585 and after running a few minutes it is coming out at 18
     
  4. DSC reef

    DSC reef Giant Squid

    Joined:
    Dec 16, 2012
    Messages:
    3,814
    Location:
    Cocoa, Florida
    I change my resin as soon as I hit 1 ppm of TDS. I use color changing DI resin to help keep me observant. I blow through resin monthly and I'm sure I can make it last longer if I get a better RO membrane which I am soon. My TDS coming from my tap is around 650-580. If you change your resin you will be at 0 TDS I'm sure. If it were me I would not use that water with that high of TDS but that's just my opinion.
     
    mdbostwick likes this.
  5. mdbostwick

    mdbostwick Vlamingii Tang

    Joined:
    Feb 21, 2013
    Messages:
    1,899
    Location:
    Canton OH
    What resin do you use?
     
  6. Billme

    Billme Eyelash Blennie

    Joined:
    Sep 9, 2013
    Messages:
    1,260
    Location:
    Bakersfield, Ca
    Maybe first spit, then say AZ desert rat three times?
     
    mdbostwick likes this.
  7. Pdxile

    Pdxile Coral Banded Shrimp

    Joined:
    Nov 1, 2013
    Messages:
    363
    Location:
    Oregon Coast
    If you blow through your resin monthly.... Do you have well water? A lot of well water is really high in co2, which makes you blow through resin at an astounding rate.
     
  8. Click Here!

  9. AZDesertRat

    AZDesertRat Giant Squid

    Joined:
    Jul 30, 2009
    Messages:
    3,904
    Location:
    Phoenix AZ
    If your finished water TDS (25) is higher than the RO only TDS (18 I assume since you mentioned it or is this the RO/DI again only lower) then it means your DI is exhausted and releasing weakly ionized contaminants back in to the treated water. These can include nitrates, phosphates and silicates to name just a few.
    Sounds like a better membrane would be worth the money as it will make the DI replacements last many times longer.

    To troubleshoot the system it requires 3 TDS readings and is one reason why I do not recommend the inline TDS meters which only read two places and are not ATC temperature compensated so less accurate than an equal priced handheld. Use your inline and measure the tap TDS before the RO membrane and the finished water after the DI then disconnect the tee with the OUT probe from where it currently and slip it in between the RO and the DI by disconnecting the 1/4" line at the DI side, inserting the tee and using a short piece of tube you cut from somewhere to connect back to the DI.
     
    Matt Rogers likes this.
  10. DSC reef

    DSC reef Giant Squid

    Joined:
    Dec 16, 2012
    Messages:
    3,814
    Location:
    Cocoa, Florida
    Aqua fx, a local company in florida.
     
  11. DSC reef

    DSC reef Giant Squid

    Joined:
    Dec 16, 2012
    Messages:
    3,814
    Location:
    Cocoa, Florida
    No well water, I have city water. Cocoa has horrible tap water.
     
  12. mdbostwick

    mdbostwick Vlamingii Tang

    Joined:
    Feb 21, 2013
    Messages:
    1,899
    Location:
    Canton OH
    The 18 tds is the same reading 10 minutes after the first reading. the first reading was about 5 minutes after starting the water through it.

    What should the TDS look like after the RO before the DI?

    It is well water.