
Bluelab
Bluelab CONTPHCON pH Controller Connect with Monitoring, Dosing, and Data Logging of pH Level in Water (Connect Stick not Included), Digital Meter for Hydroponic System and Indoor Plant Grow

Inkbird
Inkbird Combination Humidity Controller IHC-200 and Temperature Controller ITC-308 Dual Stage Outlet Thermostat Humidistat Cooling Heating Humidifier Dehumidifier Grow Tent Heater

Pinpoint
Pinpoint pH Controller 120VAC

Hayward
Hayward PRO15-2 CAT Controllers pH Sensor with 24-Inch Cable

Milwaukee
Milwaukee Instruments MC122US pH Controller with Hi/Low Range Alarm, 2 Point Manual Calibration, 0.0 to 14.0 pH Range

Bluelab
Bluelab METCOMPLUS Combo Meter Plus for pH, Temperature, and Conductivity in Water and Soil with Easy Calibration, Digital Nutrient (TDS) Testing Kit for Hydroponic System and Indoor Plant Grow

Bluelab
Bluelab PENSOILPH Soil pH Pen and Digital Meter for Soil, Water, Coco, and Rockwool with Easy Calibration, pH Test Kit for Hydroponic System and Indoor Plant Grow

Bluelab
Bluelab PROBPH pH Probe in Water, Replacement Probe for pH Meter, Monitor, and Controller with Easy Calibration, Tool for Hydroponic System and Indoor Plant Grow

Bluelab
Bluelab PENCON Conductivity Pen and Digital TDS Meter, Water Tester for Temperature and Nutrient (CF, EC, PPM 500, PPM 700), TDS Testing Kit for Hydroponic System and Indoor Plant Grow