85 products

TrolMaster Hydro-X CO2 Sensor (MBS-S8) TrolMaster Hydro-X CO2 Sensor (MBS-S8)
TrolMaster

TrolMaster Hydro-X CO2 Sensor (MBS-S8)

$221.45
Hanna pH/EC/TDS Multiparameter Probes Hanna pH/EC/TDS Multiparameter Probes
Hanna

Hanna pH/EC/TDS Multiparameter Probes

$149.99 - $209.99
Grower's Choice Master Controller Grower's Choice Master Controller
Grower's Choice

Grower's Choice Master Controller

$299.95
Electronic Water Timer

Electronic Water Timer

$29.95
DiST®1 Waterproof TDS Tester DiST®1 Waterproof TDS Tester
Hanna

DiST®1 Waterproof TDS Tester

$79.99
Grower's Edge Large Display Thermometer/Hygrometer
Sold out

Grower's Edge Large Display Thermometer/Hygrometer

$19.95
Autopilot Dual-Outlet Digital Timer Autopilot Dual-Outlet Digital Timer
Autopilot

Autopilot Dual-Outlet Digital Timer

$18.95
Autopilot CO2 Monitor & Controller w/15' Remote Sensor Autopilot CO2 Monitor & Controller w/15' Remote Sensor
Autopilot

Autopilot CO2 Monitor & Controller w/15' Remote Sensor

$274.95
Autopilot Cooling Thermostat Autopilot Cooling Thermostat
Autopilot

Autopilot Cooling Thermostat

$39.95
Autopilot Advanced 24hr Recycling Timer Autopilot Advanced 24hr Recycling Timer
Autopilot

Autopilot Advanced 24hr Recycling Timer

$49.95
Autopilot 24 hr Day & Night Cooling/Heating Thermostat Autopilot 24 hr Day & Night Cooling/Heating Thermostat
Autopilot

Autopilot 24 hr Day & Night Cooling/Heating Thermostat

$49.95
TrolMaster Aqua-X Irrigation Control System TrolMaster Aqua-X Irrigation Control System
TrolMaster

TrolMaster Aqua-X Irrigation Control System

$99.99
GroLine Electrode Storage Solution GroLine Electrode Storage Solution
Hanna

GroLine Electrode Storage Solution

$2.00 - $49.99
GroLine Soil Test Direct Soil Conductivity Tester GroLine Soil Test Direct Soil Conductivity Tester
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Hanna

GroLine Soil Test Direct Soil Conductivity Tester

$161.95
HM Digital Pen style TDS/EC/Temp meter
HM Digital

HM Digital Pen style TDS/EC/Temp meter

$39.95
Bluelab PPM Pen
Bluelab

Bluelab PPM Pen

$94.95
Bluelab pH Pen
Bluelab

Bluelab pH Pen

$125.00
Quick Calibration Solution for GroLine pH and EC Meters Quick Calibration Solution for GroLine pH and EC Meters
Hanna

Quick Calibration Solution for GroLine pH and EC Meters

$1.75 - $49.99
GroLine PH/EC/TDS Meter H9814 GroLine PH/EC/TDS Meter H9814
Hanna

GroLine PH/EC/TDS Meter H9814

$334.95
GroLine Waterproof Hydroponic pH Tester HI98118 GroLine Waterproof Hydroponic pH Tester HI98118
Hanna

GroLine Waterproof Hydroponic pH Tester HI98118

$115.95
GroLine Hydroponics pH Tester HI98115 GroLine Hydroponics pH Tester HI98115
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Hanna

GroLine Hydroponics pH Tester HI98115

$63.49
GroLine Waterproof EC/TDS (ppm) Tester GroLine Waterproof EC/TDS (ppm) Tester
Hanna

GroLine Waterproof EC/TDS (ppm) Tester

$110.95
GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester combo meter HI98131 GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester combo meter HI98131
Hanna

GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester combo meter HI98131

$235.95
GroLine General Purpose Cleaning Solution GroLine General Purpose Cleaning Solution
Hanna

GroLine General Purpose Cleaning Solution

$1.95 - $50.00