HELP!

Discussion in 'The Projects Forum' started by Omelskitot, Jul 4, 2011.

  1. Omelskitot

    Thread Starter New Member

    Jun 17, 2011
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    is there a sensor that can measure/dtects nturients in the water??im planning to make hydrocultured plant system
     
  2. #12

    Expert

    Nov 30, 2010
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    6,744
    First, It would HELP! us if you gave a bit of information in the label.

    second, I don't think there are any sensors that can tell which nutrient is available, but there are ways to measure conductivity of the solution to give you a hint about the total content of dissolved nutrients. From that, you could make your own chart telling the range of total dissolved nutrients by measuring solutions that you make just for the purpose of measuring them.
     
  3. castley

    Member

    Jul 17, 2011
    31
    0
    Yes ,as allready suggested. The conductivity of water will vary depending on the nutrients in a given amount of water. Experiments measuring this can be achived with
    two electrodes at a given spacing and contact area, using an ohmeter.
     
  4. praondevou

    AAC Fanatic!

    Jul 9, 2011
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  5. wayneh

    Expert

    Sep 9, 2010
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    Their are individual probes for many dissolved minerals (H+, Ca++, Na+, etc.) but anything other than pH can be a challenge to keep calibrated and reliable. If you're adding nutrients as a cocktail, it'd be easier to just measure conductivity and assume it's the cocktail. That won't be right, but probably close enough. If not, you'll need wet methods for the major components, ie. nitrogen, phosphorous and potassium.
     
  6. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
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    google TDS meter..sold by all hydroponic stores
     
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