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Results 1 to 5 of 5
  1. #1

    Default Aquarium CO2 meter ???


    0 Not allowed!
    Anyone ever looked into one of these before ?

    https://www.kickstarter.com/projects...-for-aquariums

    The price tag is too high for me, but this might be worth looking into to buy second-hand if they work as stated (once they have been around long enough that is). I know this is not some that I actually need, but it might be a good way to really fine-tune the balance for those of use who really like to get into those little details
    Last edited by Cliff; 06-27-2014 at 09:55 PM.
    If you take your time to do the research FIRST, you can successfully set-up and keep ANY type of aquarium with ease.
    "Not using a quarantine tank is like playing Russian roulette. Nobody wins the game, some people just get to play longer than others." - Anthony Calfo
    Fishless Cycle Cycling with Fish Marine Aquarium Info [URL="http://saltwater.aquaticcommunity.com/"]

  2. #2

    Join Date
    Nov 2012
    Location
    Chattanooga, TN
    Posts
    4,168

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    Default


    0 Not allowed!
    Looks very interesting. Would take a lot of guess work out of the process.
    Increasing your biodiversity increases your stability.

    You know what this tank needs? ........................ Crypts.


  3. Default


    0 Not allowed!
    As an electronic enthusiast, its a great idea, but I already see the concern of the unit falling into water, Especially since the controller model has mains running through it to control the solenoid. I hope this is just an early design model.
    As for the price, it seems very fair, I have a feeling from the design it uses one of these sensors which is around £55 delivered, The micro-controller and the rest of the board would probably add up to around £60, His price is £95 which seems fair for labour, programming etc.
    If I am correct about the sensor, it uses an NDIR (Nondispersive infrared) method of measuring the CO2 concentration, which basically a light passing through a chamber and then measuring the feedback to see what wavelength of the light was absorbed thus calculating the concentration of the specific gas, Because of the price and the accuracy needed for this method I do not expect a great deal of accuracy, the sensor I linked has an accuracy of +/-30ppm which isn't great. This on top of the sensor being above the water I don't expect it to be any better.

    I would just be careful with this product, again it is all speculation, but it seems with the price that this is the method which the sensor works by. Good on the guy who is running the project though!
    Regards,
    Ewan

    *EDIT: The calibration method the project runner has decided on is, leaving the sensor outside for half an hour and then taking a reading, this is then calibrated from a mean atmosphere CO2 concentration of 390ppm, this is not looking great for the accuracy side of things, There is a lot of room for error in this and the CO2 concentration in our atmosphere is always changing! Again I could be wrong about the sensor :)

    **EDIT: He is also launching a probe version which directly measures from the water, that's a plus for accuracy but still not brilliant.
    Last edited by ewanm; 07-04-2014 at 08:54 PM.

  4. Default


    0 Not allowed!
    Tim himself confirmed this is the method of detection as suspected, Hopefully he will be using a more accurate sensor than the one listed, He also confirmed the final version will use a probe, eliminating the electric hazard an increasing accuracy. So far the project looks good.
    I hope to see it succeed and am considering backing it.
    Regards,
    Ewan

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