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Hydroponic Hygrometer

Hydroponic System DiagramTo ensure that your plants are being fed the proper nutrients and nutrient concentrations, it is important to monitor your nutrient solution.

On a daily basis you should test the nutrient solution and record the results

  • EC (Nutrient concentrations)
  • PH (acidity / alkalinity...see Lesson 4 for more information on PH)
  • Temperature of nutrient solution
  • Daytime room temperature
  • Nighttime room temperature

It is also important to record when you replace your nutrient solution so you can easily determine when it should again be replaced.

In addition to these tests, you may also want to record the stage of plant growth, the size of your plants and any problems or significant changes.

Recording this information gives you an accurate accounting of what is happening with your plants. This data is an excellent tool for diagnosing problems, should they arise.

Advanced Nutrient Testing
Neither an EC or TDS meter can indicate precisely what nutrients make up the fertilizer solution. More complete test kits are available for this purpose. Many commercial growers test their nutrient solutions on a regular basis to ensure they are feeding exactly the mix that is intended. Regular leaf analysis is an excellent tool for determining the health of your plants. Leaf tissue samples are dried, crushed and analyzed to determine the exact nutrient content.

Most of the more complex kits will test nitrogen, potassium, phosphorous and sulfur. Commercial labs offer more precise results. In the event of a combination of nutrient deficiencies, the symptoms of one problem may mask the symptoms of another. A leaf tissue analysis may be the only way to determine what is wrong with your plants.

Listed below are some testing devices to get started with.


Lilyshome 14-In. Faux-Slate Indoor Outdoor Wall Clock Thermometer Hygrometer New picture
Lilyshome 14-In. Faux-Slate Indoor Outdoor Wall Clock Thermometer Hygrometer New
$1096.0

Xcellent Wireless Indoor/ Outdoor Thermometer and Hygrometer Sensor Black Siver picture
Xcellent Wireless Indoor/ Outdoor Thermometer and Hygrometer Sensor Black Siver
$1017.0

Timex 11.5in Indoor/Outdoor Tube Thermometer with Hygrometer Outdoor Thermometer picture
Timex 11.5in Indoor/Outdoor Tube Thermometer with Hygrometer Outdoor Thermometer
$1000.0

Nature's Garden Frog Barometer/Hygrometer Outdoor Thermometer, New picture
Nature's Garden Frog Barometer/Hygrometer Outdoor Thermometer, New
$1000.0

Innovic F17 Multifunctional 5 in 1 Car Thermometer Hygrometer Clock Calendar and picture
Innovic F17 Multifunctional 5 in 1 Car Thermometer Hygrometer Clock Calendar and
$1000.0

Airplane Weather Station with Thermometer Barometer and Hygrometer hangs or sits picture
Airplane Weather Station with Thermometer Barometer and Hygrometer hangs or sits
$1000.0

Delonghi DD30P AriaDry Pump Dehumidifier 30L Hygrometer & Thermometer GENUINE picture
Delonghi DD30P AriaDry Pump Dehumidifier 30L Hygrometer & Thermometer GENUINE
$788.9

Delmhorst HT-3000 Thermo-hygrometer picture
Delmhorst HT-3000 Thermo-hygrometer
$433.02

Cigar Humidor Humidifier Hygrometer Glass Display Cooling Storage Steel Modern picture
Cigar Humidor Humidifier Hygrometer Glass Display Cooling Storage Steel Modern
$415.99

Bey-Berk 30cm Porthole Wall Clock,Tide Clock,Thermometer, and Hygrometer. Shippi picture
Bey-Berk 30cm Porthole Wall Clock,Tide Clock,Thermometer, and Hygrometer. Shippi
$406.0

Digital Cigar Humidors Humidor Hygrometer Whynter CHC-251S Stainless Steel Cigar picture
Digital Cigar Humidors Humidor Hygrometer Whynter CHC-251S Stainless Steel Cigar
$389.48

Howard Miller Olympia Weather Station 612-721 barometer, hygrometer, thermometer picture
Howard Miller Olympia Weather Station 612-721 barometer, hygrometer, thermometer
$380.0

New BOSCH GIS 1000C Thermo Detector Infrared Scanner Thermometer / Hygrometer picture
New BOSCH GIS 1000C Thermo Detector Infrared Scanner Thermometer / Hygrometer
$359.9

Bey-Berk Wall Clock with Barometer, Thermo and Hygrometer.  picture
Bey-Berk Wall Clock with Barometer, Thermo and Hygrometer.
$356.0

Whynter Stainless Steel 2.5 cu ft Cigar Cooler Humidor Humidifier Hygrometer NEW picture
Whynter Stainless Steel 2.5 cu ft Cigar Cooler Humidor Humidifier Hygrometer NEW
$349.97

Bosch GIS 1000C Thermo Detector Infrared Scanner Imaging Thermometer/hygrometer picture
Bosch GIS 1000C Thermo Detector Infrared Scanner Imaging Thermometer/hygrometer
$349.89

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