PH & PPM Meters

Save $1.80
$18.00
$16.20

BLUEPRINT - BDHT-L Hygro-Thermometer - Large

Blueprint Controllers

$18.00
$16.20
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Milwaukee pH Meter pH600 AQ
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$33.95
$30.55

Milwaukee - pH Meter pH600 AQ

Milwaukee

Milwaukee's most affordable pH tester, range: 0.0 to 14.0 pH, with one point manual calibration, and accuracy of ±0.2 pH. Battery Life: 700 hours. ...

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$33.95
$30.55
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Bluelab pH Pen
Save $11.25
$112.50
$101.25

Bluelab - pH Pen

Bluelab

Measures pH and temperature. Selectable units for °C & °F. Backlit LCD display. Double junction probe (not replaceable). Successful calibration...

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$112.50
$101.25
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Save $2.00
$19.95
$17.95
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Hydrofarm - Precision Pruner and Scissor Sharpener
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$11.99
$10.79

Hydrofarm - Precision Pruner and Scissor Sharpener

Hydrofarm

The Precision Blade Sharpener quickly sharpens your Hydrofarm Precision Pruners and all similarly-sized pruners to original sharpness with a few ea...

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$11.99
$10.79
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Save $2.40
$23.95
$21.55
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Save $0.90
$9.00
$8.10

ELEMENTAL SOLUTIONS - H2O Digital Thermometer

Elemental Solutions

$9.00
$8.10
Save $0.90
Bluelab Conductivity Pen
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$94.00
$84.60

Bluelab - Conductivity Pen

Bluelab

Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful ...

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$94.00
$84.60
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Nectar for the Gods Demeter's Destiny, qt
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$20.00
$18.00

Nectar for the Gods Demeter's Destiny, qt

Nectar for the Gods

Derived from calcium phosphate, Demeter’s Destiny promotes plant sugars and fruit flavor, reduces blossom end rot, promotes vigorous plant growth ...

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$20.00
$18.00
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Bond 3 Way Soil Meter
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$9.95
$8.96

Bond - 3 Way Soil Meter

Bond

Measures moisture content of soil. Lets you know to water. Helps you determine if plant is getting adequate light. Helps you control pH level in so...

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$9.95
$8.96
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Phantom, 120V-208V-220V-240V DE Open Lighting System with USB Interface
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$589.99
$530.99

Phantom, 120V-208V-220V-240V DE Open Lighting System with USB Interface

Phantom DE

Performance, Quality & Reliability: Introducing The Commercial DE Open Lighting System The Commercial DE Open Lighting System features state-of...

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$589.99
$530.99
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P3 International - Save a Drop Water Meter
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$19.95
$17.95

P3 International - Save a Drop Water Meter

Hydrofarm

It is widely accepted that talking to your plants is great for their health. If they could speak to you, what would they say? Probably that they'r...

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$19.95
$17.95
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Rapitest Digital Soil pH Meter
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$14.99
$13.49

Rapitest Digital Soil pH Meter

Luster Leaf

Plants need the correct pH level which controls how well plants utilize the nutrients available in your soil. All plants have a pH preference, so i...

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$14.99
$13.49
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MagicalButter DecarBox / Thermometer Combo
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$34.95
$31.45

MagicalButter DecarBox / Thermometer Combo

Harvest Solutions

The DecarBox features an integrated digital probe thermometer. This device lets you easily calibrate your oven for precise accuracy during decarbox...

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$34.95
$31.45
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Nectar for the Gods Demeter's Destiny, gal
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$60.00
$54.00

Nectar for the Gods Demeter's Destiny, gal

Nectar for the Gods

Derived from calcium phosphate, Demeter’s Destiny promotes plant sugars and fruit flavor, reduces blossom end rot, promotes vigorous plant growth a...

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$60.00
$54.00
Save $6.00
Active Aqua - Floating Thermometer
Save $0.21
$2.09
$1.88

Active Aqua - Floating Thermometer

Active Aqua

The Active Aqua floating thermometer delivers easy and accurate readings of your water temperature. This gauge floats and has a pressure sensitive...

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$2.09
$1.88
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Active Air - Hygrometer - Thermometer with Alarm Clock
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$19.95
$17.95

Active Air - Hygrometer - Thermometer with Alarm Clock

Active Air

Active Air's indoor-outdoor thermometer gives you more. Made of sturdy materials to stand up to the climate of your indoor grow room, this essenti...

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$19.95
$17.95
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Gardena Smart Flow Water Meter
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$49.99
$44.99

Gardena - Smart Flow Water Meter

Gardena

The Gardena Smart Flow Water Meter measures water usage daily, monthly, by season, or yearly. The LCD screen clearly displays information with meas...

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$49.99
$44.99
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Quantum PAR Meter
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$164.95
$148.45

Quantum PAR Meter

Active Eye

QUANTUM PAR METER Fully portable handheld PAR meter features our highly accurate, integrated Quantum Sensor that measures PAR (Photosynthetically A...

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$164.95
$148.45
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Luster Leaf Rapitest Digital Moisture Meter
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$12.99
$11.69

Luster Leaf Rapitest Digital Moisture Meter

Luster Leaf

The Rapitest® Digital Moisture Meter tests for moisture at the roots - where it matters - you no longer risk over watering a healthy plant just bec...

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$12.99
$11.69
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ARS Sharpening Stone
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$14.99
$13.49

ARS - Sharpening Stone

ARS

The AC-SS240 is a sharpening stone designed by ARS. Made of hard stone, this stone is ideally shaped for pruners, scissors and hedge shears. It is ...

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$14.99
$13.49
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Rapitest Digital Moisture Meter - Gardin
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$12.99
$11.69

Rapitest Digital Moisture Meter

Rapitest

The Rapitest® Digital Moisture Meter is an essential tool for keeping soil moisture at ideal levels, providing accurate readings instantly on its L...

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$12.99
$11.69
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Rapitest Digital Soil pH Meter - Gardin
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$14.99
$13.49

Rapitest Digital Soil pH Meter

Rapitest

For an accurate, easy-to-use soil pH tester, look no further than the Rapitest® Digital Soil pH Meter. The unit’s interface presents test results i...

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$14.99
$13.49
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GroLine Waterproof Combo pH/EC/TDS (ppm) Meter
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$259.00
$233.10

GroLine - Waterproof Combo pH/EC/TDS (ppm) Meter

Hanna Instruments

The HI9814 is a slim, light, and waterproof meter that allows you to measure pH, TDS (ppm), and temperature of your hydroponic nutrient solution...

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$259.00
$233.10
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Phantom - 50 Series, 1000W, 120V/240V DE Open Lighting System with USB Interface
Save $59.00
$589.99
$530.99

Phantom - 50 Series, 1000W, 120V/240V DE Open Lighting System with USB Interface

Hydrofarm

The Commercial DE Open Lighting System features state-of-the-art double-ended technology that uniformly delivers optimum PAR value over a broad fo...

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$589.99
$530.99
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GroLine Direct Soil EC TESTER/PEN
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$119.00
$107.10

GroLine - Direct Soil EC TESTER/PEN

Hanna Instruments

$119.00
$107.10
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Save $38.90
$389.00
$350.10
Save $38.90
Save $23.20
$232.00
$208.80
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SG 1000W HPS Open Ballast, 120/240V
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$124.95
$112.46

SG 1000W HPS Open Ballast, 120/240V

Hydrofarm

$124.95
$112.46
Save $12.49
Hydrofarm Automatic Mist Dispenser
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$22.95
$20.66

Hydrofarm Automatic Mist Dispenser

Hydrofarm

$22.95
$20.66
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Hanna Soil Conductivity/Salinity Meter w/Carrying Case
Save $77.10
$770.99
$693.89
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Hanna EC/TDS/Temperature Meter HIGH RANGE
Save $26.40
$263.99
$237.59

Hanna - EC/TDS/Temperature Meter HIGH RANGE

Hanna Instruments

$263.99
$237.59
Save $26.40