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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.


Delonghi DD30P AriaDry Pump Dehumidifier 30L Hygrometer & Thermometer  GENUINE picture
Delonghi DD30P AriaDry Pump Dehumidifier 30L Hygrometer & Thermometer GENUINE
$889.9

Cigar Humidor Cabinet Stainless Steel Storage Preserver Hygrometer Home To Smoke picture
Cigar Humidor Cabinet Stainless Steel Storage Preserver Hygrometer Home To Smoke
$399.87

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

Bosch GIS 1000C Thermo Detector Infrared Scanner Imaging Thermometer/hygrometer picture
Bosch GIS 1000C Thermo Detector Infrared Scanner Imaging Thermometer/hygrometer
$349.54

Humidor Cigar Cabinet Stainless Steel Storage Cooler System Kit Hygrometer Large picture
Humidor Cigar Cabinet Stainless Steel Storage Cooler System Kit Hygrometer Large
$348.95

Bosch GIS 1000C Thermo Detector Infrared Scanner Thermometer Hygrometer picture
Bosch GIS 1000C Thermo Detector Infrared Scanner Thermometer Hygrometer
$346.89

New BOSCH GIS 1000C Thermo Detector Infrared Scanner Thermometer / Hygrometer picture
New BOSCH GIS 1000C Thermo Detector Infrared Scanner Thermometer / Hygrometer
$345.9

Dwyer Digital Thermo-Hygrometer, 20cm Probe Length. Best Price picture
Dwyer Digital Thermo-Hygrometer, 20cm Probe Length. Best Price
$338.0

DELMHORST INSTRUMENT-HT-3000W/CS HT-3000 Hygrometer picture
DELMHORST INSTRUMENT-HT-3000W/CS HT-3000 Hygrometer
$328.0

Cigar Humidor Humidifier Hygrometer Glass Display Cooling Storage Steel Modern picture
Cigar Humidor Humidifier Hygrometer Glass Display Cooling Storage Steel Modern
$319.99

Maritime Essential Thermometer Hygrometer Easy-To-Read Weather Station Clock picture
Maritime Essential Thermometer Hygrometer Easy-To-Read Weather Station Clock
$315.16

Bey-Berk 12
Bey-Berk 12" Porthole Wall Clock,Tide Clock,Thermometer, and Hygrometer
$309.99

Hygrometer Stainless Steel Store Preserve Age Cigar Cooler Humidor Storage New picture
Hygrometer Stainless Steel Store Preserve Age Cigar Cooler Humidor Storage New
$306.95

Cigar Humidor Cabinet Stainless Steel Storage Preserver Hygrometer Home To Smoke picture
Cigar Humidor Cabinet Stainless Steel Storage Preserver Hygrometer Home To Smoke
$300.87

Banjo Weather Station with Thermometer, Hygrometer and Barometer Gold Dials New picture
Banjo Weather Station with Thermometer, Hygrometer and Barometer Gold Dials New
$291.44

Comfort Minder Black & Nickel Hygrometer [ID 1624011] picture
Comfort Minder Black & Nickel Hygrometer [ID 1624011]
$281.02

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