![Milwaukee Instruments MC720 pH Controller with Mp810 Dosing Pump, 0 Degree C to 50 Degree C Temperature Range, 0.1 pH Resolution: Amazon.com: Industrial & Scientific Milwaukee Instruments MC720 pH Controller with Mp810 Dosing Pump, 0 Degree C to 50 Degree C Temperature Range, 0.1 pH Resolution: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/51B0pKXQYIL._AC_UF1000,1000_QL80_.jpg)
Milwaukee Instruments MC720 pH Controller with Mp810 Dosing Pump, 0 Degree C to 50 Degree C Temperature Range, 0.1 pH Resolution: Amazon.com: Industrial & Scientific
![Ph Meter and Value Controller with Probe Ph2010, PH Value Online Monitor and Controller: Amazon.com: Industrial & Scientific Ph Meter and Value Controller with Probe Ph2010, PH Value Online Monitor and Controller: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/51vOZsRNOGL._AC_UF1000,1000_QL80_.jpg)
Ph Meter and Value Controller with Probe Ph2010, PH Value Online Monitor and Controller: Amazon.com: Industrial & Scientific
![Amazon.com: General Hydroponics pH Control Kit for a Balanced Nutrient Solution : Industrial & Scientific Amazon.com: General Hydroponics pH Control Kit for a Balanced Nutrient Solution : Industrial & Scientific](https://m.media-amazon.com/images/I/719NV7rpDNL._AC_UF894,1000_QL80_.jpg)
Amazon.com: General Hydroponics pH Control Kit for a Balanced Nutrient Solution : Industrial & Scientific
![Amazon.com: 2 in 1 pH ORP Redox Controller Monitor w/Output Power Relay Control Water Quality Meter Electrode Probe BNC & Continuous Measurement Kit for Aquarium Hydroponics Plant Pool Spa : Patio, Lawn Amazon.com: 2 in 1 pH ORP Redox Controller Monitor w/Output Power Relay Control Water Quality Meter Electrode Probe BNC & Continuous Measurement Kit for Aquarium Hydroponics Plant Pool Spa : Patio, Lawn](https://m.media-amazon.com/images/I/71Li3zRjsKL.jpg)
Amazon.com: 2 in 1 pH ORP Redox Controller Monitor w/Output Power Relay Control Water Quality Meter Electrode Probe BNC & Continuous Measurement Kit for Aquarium Hydroponics Plant Pool Spa : Patio, Lawn
![Amazon.com: 2 in 1 pH ORP Redox Controller Monitor w/Output Power Relay Control Water Quality Meter Electrode Probe BNC & Continuous Measurement Kit for Aquarium Hydroponics Plant Pool Spa : Patio, Lawn Amazon.com: 2 in 1 pH ORP Redox Controller Monitor w/Output Power Relay Control Water Quality Meter Electrode Probe BNC & Continuous Measurement Kit for Aquarium Hydroponics Plant Pool Spa : Patio, Lawn](https://m.media-amazon.com/images/I/71jkdw85UXL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: 2 in 1 pH ORP Redox Controller Monitor w/Output Power Relay Control Water Quality Meter Electrode Probe BNC & Continuous Measurement Kit for Aquarium Hydroponics Plant Pool Spa : Patio, Lawn
![Hydrofarm Autopilot Digital pH Controller and Automated pH Adjustment, APCEPH1: Amazon.com: Industrial & Scientific Hydrofarm Autopilot Digital pH Controller and Automated pH Adjustment, APCEPH1: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/61xPG+1VIjL._AC_UF1000,1000_QL80_.jpg)
Hydrofarm Autopilot Digital pH Controller and Automated pH Adjustment, APCEPH1: Amazon.com: Industrial & Scientific
![Amazon.com: 3 In 1 PH/TEMP/ORP Controller Water Quality Detector BNC Type Probe Water Quality Tester For Aquarium Monitor : Industrial & Scientific Amazon.com: 3 In 1 PH/TEMP/ORP Controller Water Quality Detector BNC Type Probe Water Quality Tester For Aquarium Monitor : Industrial & Scientific](https://m.media-amazon.com/images/I/51mjD+DjVoL._AC_UF894,1000_QL80_.jpg)
Amazon.com: 3 In 1 PH/TEMP/ORP Controller Water Quality Detector BNC Type Probe Water Quality Tester For Aquarium Monitor : Industrial & Scientific
![RCYAGO WiFi Tuya pH Monitor, 3 in 1 pH Salinity Temperature Controller Monitor, Output Power Relay Control Water Quality Monitoring Tester Kit for Aquariums Seawater Aquaculture Fish Tank: Amazon.com: Industrial & Scientific RCYAGO WiFi Tuya pH Monitor, 3 in 1 pH Salinity Temperature Controller Monitor, Output Power Relay Control Water Quality Monitoring Tester Kit for Aquariums Seawater Aquaculture Fish Tank: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/61B6XhaMaiL._AC_UF1000,1000_QL80_.jpg)
RCYAGO WiFi Tuya pH Monitor, 3 in 1 pH Salinity Temperature Controller Monitor, Output Power Relay Control Water Quality Monitoring Tester Kit for Aquariums Seawater Aquaculture Fish Tank: Amazon.com: Industrial & Scientific
![American Marine PINPOINT pH Controller: Audio Video Remote Controls: Amazon.com: Industrial & Scientific American Marine PINPOINT pH Controller: Audio Video Remote Controls: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/41IvljntdOL._AC_UF1000,1000_QL80_.jpg)
American Marine PINPOINT pH Controller: Audio Video Remote Controls: Amazon.com: Industrial & Scientific
![Liquid PH Value Detection detect Sensor Module Monitoring Control Board for Arduino BNC Electrode Probe Controller: Amazon.com: Industrial & Scientific Liquid PH Value Detection detect Sensor Module Monitoring Control Board for Arduino BNC Electrode Probe Controller: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/41EBQ3L0iwL._AC_UF1000,1000_QL80_.jpg)
Liquid PH Value Detection detect Sensor Module Monitoring Control Board for Arduino BNC Electrode Probe Controller: Amazon.com: Industrial & Scientific
![Amazon.com: 2‑in‑1 PH and ORP Controller Acidity Alkalinity Controller Water Quality Monitoring Tool(#4) : Industrial & Scientific Amazon.com: 2‑in‑1 PH and ORP Controller Acidity Alkalinity Controller Water Quality Monitoring Tool(#4) : Industrial & Scientific](https://m.media-amazon.com/images/I/61lwEi1j6eS._AC_UF894,1000_QL80_.jpg)
Amazon.com: 2‑in‑1 PH and ORP Controller Acidity Alkalinity Controller Water Quality Monitoring Tool(#4) : Industrial & Scientific
![Milwaukee Instruments MC122US pH Controller with Hi/Low Range Alarm, 2 Point Manual Calibration, 0.0 to 14.0 pH Range: Amazon.com: Industrial & Scientific Milwaukee Instruments MC122US pH Controller with Hi/Low Range Alarm, 2 Point Manual Calibration, 0.0 to 14.0 pH Range: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/51laLCdgnZL._AC_UF1000,1000_QL80_.jpg)
Milwaukee Instruments MC122US pH Controller with Hi/Low Range Alarm, 2 Point Manual Calibration, 0.0 to 14.0 pH Range: Amazon.com: Industrial & Scientific
![Amazon.com: Phanteks PH-CTHUB_DRGB_01 Digital Controller Hub with 3-Button Remote M/B DRGB Adapter Custom Modes and Patterns or ASUS/MSI Software Compatible Amazon.com: Phanteks PH-CTHUB_DRGB_01 Digital Controller Hub with 3-Button Remote M/B DRGB Adapter Custom Modes and Patterns or ASUS/MSI Software Compatible](https://m.media-amazon.com/images/I/71CMfZGIjjL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Phanteks PH-CTHUB_DRGB_01 Digital Controller Hub with 3-Button Remote M/B DRGB Adapter Custom Modes and Patterns or ASUS/MSI Software Compatible
![Milwaukee Instruments MC122US pH Controller with Hi/Low Range Alarm, 2 Point Manual Calibration, 0.0 to 14.0 pH Range: Amazon.com: Industrial & Scientific Milwaukee Instruments MC122US pH Controller with Hi/Low Range Alarm, 2 Point Manual Calibration, 0.0 to 14.0 pH Range: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/613iaVw1AeL._AC_UF1000,1000_QL80_.jpg)
Milwaukee Instruments MC122US pH Controller with Hi/Low Range Alarm, 2 Point Manual Calibration, 0.0 to 14.0 pH Range: Amazon.com: Industrial & Scientific
![Amazon.com: Bluelab CONTPH pH Controller with Monitoring and Dosing in Water Digital Meter for Hydroponic System and Indoor Plant Grow with Easy Calibration, 1, White : Everything Else Amazon.com: Bluelab CONTPH pH Controller with Monitoring and Dosing in Water Digital Meter for Hydroponic System and Indoor Plant Grow with Easy Calibration, 1, White : Everything Else](https://m.media-amazon.com/images/I/41RQl4voffL._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingFOURANDHALF%2CBottomLeft%2C360%2C-6_SR600%2C315_ZA158%2C445%2C290%2C400%2C400%2CAmazonEmberBold%2C12%2C4%2C0%2C0%2C5_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)
Amazon.com: Bluelab CONTPH pH Controller with Monitoring and Dosing in Water Digital Meter for Hydroponic System and Indoor Plant Grow with Easy Calibration, 1, White : Everything Else
![Smart PH ORP Controller Online Monitoring and Dosing Digital pH Meter Redox Temp Tester Wireless App Remote for Swimming Pool Aquaculture Fishpond: Amazon.com: Industrial & Scientific Smart PH ORP Controller Online Monitoring and Dosing Digital pH Meter Redox Temp Tester Wireless App Remote for Swimming Pool Aquaculture Fishpond: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/71elMVDu9YL._AC_UF1000,1000_QL80_.jpg)
Smart PH ORP Controller Online Monitoring and Dosing Digital pH Meter Redox Temp Tester Wireless App Remote for Swimming Pool Aquaculture Fishpond: Amazon.com: Industrial & Scientific
![Amazon.com: 3 in 1 pH/EC/TEMP Water Quality Detector PH Controller Repleaceable Electrode BNC Type Probe : Industrial & Scientific Amazon.com: 3 in 1 pH/EC/TEMP Water Quality Detector PH Controller Repleaceable Electrode BNC Type Probe : Industrial & Scientific](https://m.media-amazon.com/images/I/61FCaVFUgcL._AC_UF894,1000_QL80_.jpg)
Amazon.com: 3 in 1 pH/EC/TEMP Water Quality Detector PH Controller Repleaceable Electrode BNC Type Probe : Industrial & Scientific
![Amazon.com: Phanteks Universal Fan Controller, PH-PWHUB_02 – Low Profile Design, Universal Fan Controller, Magnetic Housing, Three Speed Modes with Remote Control : Electronics Amazon.com: Phanteks Universal Fan Controller, PH-PWHUB_02 – Low Profile Design, Universal Fan Controller, Magnetic Housing, Three Speed Modes with Remote Control : Electronics](https://m.media-amazon.com/images/I/71FcTHX0BnL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Phanteks Universal Fan Controller, PH-PWHUB_02 – Low Profile Design, Universal Fan Controller, Magnetic Housing, Three Speed Modes with Remote Control : Electronics
![DANOPLUS Smart pH ORP Controller with Remote App Monitoring & Dosing in Water, 3 in 1 pH/ORP/Temp Meter Replaceable Probes for Hydroponics, Aquariums & Pool: Amazon.com: Industrial & Scientific DANOPLUS Smart pH ORP Controller with Remote App Monitoring & Dosing in Water, 3 in 1 pH/ORP/Temp Meter Replaceable Probes for Hydroponics, Aquariums & Pool: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/71f4qfRfIpL._AC_UF1000,1000_QL80_.jpg)
DANOPLUS Smart pH ORP Controller with Remote App Monitoring & Dosing in Water, 3 in 1 pH/ORP/Temp Meter Replaceable Probes for Hydroponics, Aquariums & Pool: Amazon.com: Industrial & Scientific
![DANOPLUS Smart pH ORP Controller with Remote App Monitoring & Dosing in Water, 3 in 1 pH/ORP/Temp Meter Replaceable Probes for Hydroponics, Aquariums & Pool: Amazon.com: Industrial & Scientific DANOPLUS Smart pH ORP Controller with Remote App Monitoring & Dosing in Water, 3 in 1 pH/ORP/Temp Meter Replaceable Probes for Hydroponics, Aquariums & Pool: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/71f4qfRfIpL.jpg)
DANOPLUS Smart pH ORP Controller with Remote App Monitoring & Dosing in Water, 3 in 1 pH/ORP/Temp Meter Replaceable Probes for Hydroponics, Aquariums & Pool: Amazon.com: Industrial & Scientific
![Amazon.com: Yewhick Smart pH EC Monitor with Controller, Hydroponic Nutrients Tester, Professional EC pH Meter, APP Online Nutrient Meter with Data Logger Function for Hydroponics System Agricultural Irrigation : Patio, Lawn & Amazon.com: Yewhick Smart pH EC Monitor with Controller, Hydroponic Nutrients Tester, Professional EC pH Meter, APP Online Nutrient Meter with Data Logger Function for Hydroponics System Agricultural Irrigation : Patio, Lawn &](https://m.media-amazon.com/images/I/71bSORerWUL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: Yewhick Smart pH EC Monitor with Controller, Hydroponic Nutrients Tester, Professional EC pH Meter, APP Online Nutrient Meter with Data Logger Function for Hydroponics System Agricultural Irrigation : Patio, Lawn &
![DANOPLUS Smart pH ORP Controller with Remote App Monitoring & Dosing in Water, 3 in 1 pH/ORP/Temp Meter Replaceable Probes for Hydroponics, Aquariums & Pool: Amazon.com: Industrial & Scientific DANOPLUS Smart pH ORP Controller with Remote App Monitoring & Dosing in Water, 3 in 1 pH/ORP/Temp Meter Replaceable Probes for Hydroponics, Aquariums & Pool: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/61sy5Q+zDpL._AC_UF350,350_QL80_.jpg)
DANOPLUS Smart pH ORP Controller with Remote App Monitoring & Dosing in Water, 3 in 1 pH/ORP/Temp Meter Replaceable Probes for Hydroponics, Aquariums & Pool: Amazon.com: Industrial & Scientific
![Amazon.com: Bluelab CONTPH pH Controller with Monitoring and Dosing in Water Digital Meter for Hydroponic System and Indoor Plant Grow with Easy Calibration, 1, White : Everything Else Amazon.com: Bluelab CONTPH pH Controller with Monitoring and Dosing in Water Digital Meter for Hydroponic System and Indoor Plant Grow with Easy Calibration, 1, White : Everything Else](https://m.media-amazon.com/images/I/81p+4y+x4ZL.jpg)
Amazon.com: Bluelab CONTPH pH Controller with Monitoring and Dosing in Water Digital Meter for Hydroponic System and Indoor Plant Grow with Easy Calibration, 1, White : Everything Else
![0-14 pH Electrode Probe BNC Connector, 300cm Cable for PH Meter Monitor Controller Test Sensor, Replacement Kit for Aquarium Hydroponics Plant Pool Spa (pH Electrode): Amazon.com: Industrial & Scientific 0-14 pH Electrode Probe BNC Connector, 300cm Cable for PH Meter Monitor Controller Test Sensor, Replacement Kit for Aquarium Hydroponics Plant Pool Spa (pH Electrode): Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/61SwREXP+eL._AC_UF1000,1000_QL80_.jpg)
0-14 pH Electrode Probe BNC Connector, 300cm Cable for PH Meter Monitor Controller Test Sensor, Replacement Kit for Aquarium Hydroponics Plant Pool Spa (pH Electrode): Amazon.com: Industrial & Scientific
![0-14 pH Electrode Probe BNC Connector, 300cm Cable for PH Meter Monitor Controller Test Sensor, Replacement Kit for Aquarium Hydroponics Plant Pool Spa: Amazon.com: Industrial & Scientific 0-14 pH Electrode Probe BNC Connector, 300cm Cable for PH Meter Monitor Controller Test Sensor, Replacement Kit for Aquarium Hydroponics Plant Pool Spa: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/71OQZa76ynL._AC_UF1000,1000_QL80_.jpg)