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Paper on measuring CO2 in marine plant chambers

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  • Paper on measuring CO2 in marine plant chambers

    http://www.plantphysiol.org/cgi/reprint/78/3/551.pdf

    Regards,
    Tom Barr
    www.BarrReport.com

  • #2
    Note the time frames, the CO2 changes really fast.

    Regards,
    Tom Barr
    www.BarrReport.com

    Comment


    • #3
      http://www3.interscience.wiley.com/j...TRY=1&SRETRY=0

      This one is really good and offers up a system for Aquarist to potentially use at a semi low cost.

      http://new.aslo.org/lomethods/free/2008/0347.pdf

      With some DIY ing, this should be doable.


      Regards,
      Tom Barr
      www.BarrReport.com

      Comment


      • #4
        Nice articles. If the link doesn't work on the second one, then use this:

        http://www3.interscience.wiley.com/c...42823/PDFSTART

        regards,
        dutchy
        regards,
        dutchy.

        My 2011, 2012 and 2013 AGA aquascaping contest entries:
        http://www.barrreport.com/album.php?u=21013

        Comment


        • #5
          Interesting. So in a nut-shell, they're just using a coil of silicone tubing as a CO2 permeable membrane and measuring the CO2 concentration of the air inside the tubing.

          It's a neat idea. Cheapest NDIR CO2 meter I could find was still $170, so considering a small air pump, silicone tubing, non-CO2 permeable tubing (e.g. copper / PVC / Stainless), time involved... we're looking at about ~$200 for a CO2 meter capable of 5-min time resolution.

          I may just build one of these. Wouldn't take me much time at all. Now if I hadn't already blown my aquarium budget on upgrading my filtration system... dag-nabit!!
          Last edited by Oreo; 07-17-2010, 11:22 AM.
          "Do, then talk about it.
          No do? No talk!!" - Tom Barr

          Comment


          • #6
            Thanks for the articles Tom. I'm not quit able to comprehend 90% of them I'm afraid.
            Oreo - could the CO2 meter be built inside the CO2 reactor or into a surface skimmer?
            :encouragement: Roll You're Own: Greater Washington Aquatic Plant Association
            Mixed with a sound of water's murmuring
            a sensitive plant in a garden growing.

            Comment


            • #7
              Hi,

              Now if I hadn't already blown my aquarium budget on upgrading my filtration system... dag-nabit!!
              I would consider providing the capital for this experiment.....If it works you just need to build ME one too...

              Sad to say, I have spent much more and gotten WAY less lol

              I don't have the intelligence or the DIY skills to do it, but I can buy parts and have them shipped to you

              PM me if interested...
              Thanks,

              Gerry.

              'When something's not right, it's wrong'. Bob Dylan

              Current 220 scape

              http://www.barrreport.com/showthread...3219-220-video

              Comment


              • #8
                You've been PM'd Gerry!
                "Do, then talk about it.
                No do? No talk!!" - Tom Barr

                Comment


                • #9
                  Oreo,

                  You might consider making these for the hobbyists and it would pay well.
                  We also need to calibrate and confirm the accuracy of the system method once you make one etc.

                  But if decent, and 5-10minute lag time to +/- 1ppm, you are in business.

                  Regards,
                  Tom Barr
                  www.BarrReport.com

                  Comment


                  • #10
                    I'd consider that. Need to get a prototype built as a proof of concept first. I'm not sure about +/- 1ppm accuracy though. I mean, I'm looking at the least expensive meter on the market. Accuracy will be whatever the meter is capable of.
                    "Do, then talk about it.
                    No do? No talk!!" - Tom Barr

                    Comment


                    • #11
                      Where can I sign up?

                      regards,
                      dutchy
                      regards,
                      dutchy.

                      My 2011, 2012 and 2013 AGA aquascaping contest entries:
                      http://www.barrreport.com/album.php?u=21013

                      Comment


                      • #12
                        Oreo,

                        Pm replied to! Let's buy a quality meter at least....since it is a prototype we may as well see what we can do for a little more $

                        I have found that sometimes the price between mediocre or decent and really good is not that large percentage wise...
                        Thanks,

                        Gerry.

                        'When something's not right, it's wrong'. Bob Dylan

                        Current 220 scape

                        http://www.barrreport.com/showthread...3219-220-video

                        Comment


                        • #13
                          Dutchy, don't get too anxious just yet. If it works & I don't feel like building more, at the very least I'll post a bunch of pictures for anyone else who wants to DIY their own. Of all the complex things I've fabricated I suspect this will be one of the more simple builds.

                          If other people want me to build one for them we can discuss those arrangements after a successful prototype is completed.
                          "Do, then talk about it.
                          No do? No talk!!" - Tom Barr

                          Comment


                          • #14
                            If other people want me to build one for them we can discuss those arrangements after a successful prototype is completed.
                            I just hope that all those folks will be in line behind me lol

                            I can see a few folks here going for one...I know I would buy one retail if I could.. $300-600 say doesn't sound bad compared to the $2500 c02 meter Tom uses....

                            Especially if we can benchmark the results against a meter of this type and they were comparable.....I'd buy one....

                            Maybe the reef folks would have an interest?
                            Thanks,

                            Gerry.

                            'When something's not right, it's wrong'. Bob Dylan

                            Current 220 scape

                            http://www.barrreport.com/showthread...3219-220-video

                            Comment


                            • #15
                              GerryD, since you're financing this project you're entitled to the very first one.

                              PM incoming...
                              "Do, then talk about it.
                              No do? No talk!!" - Tom Barr

                              Comment

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