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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.


24''x24''x48'' Grow Tent Kit with 300W LED Light Hangers Hygrometer & Shears New picture
24''x24''x48'' Grow Tent Kit with 300W LED Light Hangers Hygrometer & Shears New
$369.7

Novasina MIK 3000-C Ofenfühler Hygrometer Dew Point Meter 0 100% Rh -50 176°F picture
Novasina MIK 3000-C Ofenfühler Hygrometer Dew Point Meter 0 100% Rh -50 176°F
$366.72

Delmhorst Electrodes QuickNav 3 in 1 Digital Moisture Meter Thermo‑Hygrometer picture
Delmhorst Electrodes QuickNav 3 in 1 Digital Moisture Meter Thermo‑Hygrometer
$349.99

Analog Weather Station Machinery Barometer View Thermometer Hygrometer NOVELTY picture
Analog Weather Station Machinery Barometer View Thermometer Hygrometer NOVELTY
$327.23

Analog Weather Station Machinery Barometer View Thermometer Hygrometer NOVELTY picture
Analog Weather Station Machinery Barometer View Thermometer Hygrometer NOVELTY
$319.0

20X(Digital Wireless Thermometer Hygrometer Temperature Humidity Moisture Meter  picture
20X(Digital Wireless Thermometer Hygrometer Temperature Humidity Moisture Meter
$304.99

5X(Wall Barometer Thermometer Hygrometer Air Pressure Gauge Weather Station V0V9 picture
5X(Wall Barometer Thermometer Hygrometer Air Pressure Gauge Weather Station V0V9
$303.79

5X(3Pcs/Set Sauna Room 2 in 1 Thermometer Hygrometer Wooden Bucket Sauna Ac V7U1 picture
5X(3Pcs/Set Sauna Room 2 in 1 Thermometer Hygrometer Wooden Bucket Sauna Ac V7U1
$302.96

30X(2Pack Soil Moisture Meter Hygrometer Moisture Sensor Meter for Garden F T2M1 picture
30X(2Pack Soil Moisture Meter Hygrometer Moisture Sensor Meter for Garden F T2M1
$302.62

SEIKO Wall Clock with Thermometer and Hygrometer and Bell Chime QXH050BL picture
SEIKO Wall Clock with Thermometer and Hygrometer and Bell Chime QXH050BL
$300.0

Brass Tide Clock and  Brass Thermometer Hygrometer on Stand picture
Brass Tide Clock and Brass Thermometer Hygrometer on Stand
$299.0

20X(10 inch Indoor Outdoor Weather Thermometer/Hygrometer for Patio Wall De N6Q5 picture
20X(10 inch Indoor Outdoor Weather Thermometer/Hygrometer for Patio Wall De N6Q5
$297.89

WEATHER STATIONS -
WEATHER STATIONS -"GLOUCESTER" CLOCK, BAROMETER & THERMOMETER HYGROMETER - OAK
$295.0

30X(132Mm Pointer Type Thermal Bimetal Thermometer and Hygrometer Table Ind C5W1 picture
30X(132Mm Pointer Type Thermal Bimetal Thermometer and Hygrometer Table Ind C5W1
$294.99

20X(10 inch Indoor Outdoor No Battery Weather Thermometer Hygrometer Wall H K1W6 picture
20X(10 inch Indoor Outdoor No Battery Weather Thermometer Hygrometer Wall H K1W6
$293.08

20X(10 Inch Indoor Outdoor Weather Thermometer Hygrometer for Patio  Wall o K3U4 picture
20X(10 Inch Indoor Outdoor Weather Thermometer Hygrometer for Patio Wall o K3U4
$292.9

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