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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.


Global-store Weather Station Indoor Outdoor Thermometer Hygrometer+ Remote.. picture
Global-store Weather Station Indoor Outdoor Thermometer Hygrometer+ Remote..
$978.0

Howard Miller 612-721 Olympia - Large Weather Station - Barometer & Hygrometer picture
Howard Miller 612-721 Olympia - Large Weather Station - Barometer & Hygrometer
$799.0

HOWARD MILLER THERMOMETER, BROMETER, HYGROMETER 612-721 OLYMPIA picture
HOWARD MILLER THERMOMETER, BROMETER, HYGROMETER 612-721 OLYMPIA
$749.0

GE PANAMETRICS MTS5-121-10 MOISTURE TARGET SERIES 5 HYGROMETER Make an Offer! picture
GE PANAMETRICS MTS5-121-10 MOISTURE TARGET SERIES 5 HYGROMETER Make an Offer!
$599.98

Comet T3510 Remote Thermometer Hygrometer with Ethernet Interface picture
Comet T3510 Remote Thermometer Hygrometer with Ethernet Interface
$490.0

Cigar Cooler Humidor Freestanding Electric Hygrometer Stainless Steel 2.5 cu.ft picture
Cigar Cooler Humidor Freestanding Electric Hygrometer Stainless Steel 2.5 cu.ft
$421.0

(12 PK) MINDER WIRELESS LONG RANGE THERMOMETER/HYGROMETER picture
(12 PK) MINDER WIRELESS LONG RANGE THERMOMETER/HYGROMETER
$419.98

100PC Durable Analog Hygrometer Humidity Meter Power-Free Indoor Outdoor good PN picture
100PC Durable Analog Hygrometer Humidity Meter Power-Free Indoor Outdoor good PN
$400.49

100PC Durable Analog Hygrometer Humidity Meter Power-Free Indoor Outdoor good RS picture
100PC Durable Analog Hygrometer Humidity Meter Power-Free Indoor Outdoor good RS
$400.0

100PC Durable Analog Hygrometer Humidity Meter Power-Free Indoor Outdoor good OS picture
100PC Durable Analog Hygrometer Humidity Meter Power-Free Indoor Outdoor good OS
$400.0

100PC Durable Analog Hygrometer Humidity Meter Power-Free Indoor Outdoor good RS picture
100PC Durable Analog Hygrometer Humidity Meter Power-Free Indoor Outdoor good RS
$400.0

100PC Durable Analog Hygrometer Humidity Meter Power-Free Indoor Outdoor good RS picture
100PC Durable Analog Hygrometer Humidity Meter Power-Free Indoor Outdoor good RS
$400.0

100PC Durable Analog Hygrometer Humidity Meter Power-Free Indoor Outdoor good HS picture
100PC Durable Analog Hygrometer Humidity Meter Power-Free Indoor Outdoor good HS
$400.0

Freestanding Electric Hygrometer Stainless Steel 2.5 cu.ft Cigar Cooler Humidor picture
Freestanding Electric Hygrometer Stainless Steel 2.5 cu.ft Cigar Cooler Humidor
$398.6

Bosch GIS 1000C Thermo Detector Infrared Scanner Imaging Thermometer/hygrometer picture
Bosch GIS 1000C Thermo Detector Infrared Scanner Imaging Thermometer/hygrometer
$389.99

Cigar Cooler Humidor Freestanding Electric Hygrometer Stainless Steel 2.5 cu ft picture
Cigar Cooler Humidor Freestanding Electric Hygrometer Stainless Steel 2.5 cu ft
$380.15

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