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Meters & Controllers | Surplus Network

Osmolator 3155 Auto Top Off - Tunze
USA
Osmolator 3155 Auto Top Off - Tunze

$199.99 USD

Osmolator 3155 Auto Top Off - Tunze

$199.99 USD

HYDROS Control 2 Starter Pack Aquarium Monitor, Controller With App
USA
HYDROS Control 2 Starter Pack...

$199.99 USD

HYDROS Control 2 Starter Pack...

$199.99 USD

Osmolator 3155 Auto Top Off - Tunze
USA
Osmolator 3155 Auto Top Off - Tunze

$199.99 USD

Osmolator 3155 Auto Top Off - Tunze

$199.99 USD

*NEW* AQUATEK Aquarium CO2 Regulator Mini with Integrated COOL TOUCH Solenoid
USA
*NEW* AQUATEK Aquarium CO2 Regulator...

$67.99 USD

*NEW* AQUATEK Aquarium CO2 Regulator...

$67.99 USD

DOS Dosing and Fluid Metering System for Neptune Apex - Neptune Systems
USA
DOS Dosing and Fluid Metering System...

$225.00 USD

DOS Dosing and Fluid Metering System...

$225.00 USD

AQUANEAT Aquarium Thermometer Digital Fish Tank Temperature yellow 3PCS
USA
AQUANEAT Aquarium Thermometer Digital...

$9.62 USD

AQUANEAT Aquarium Thermometer Digital...

$9.62 USD

Neptune Systems Trident and Reagent
USA
Neptune Systems Trident and Reagent

$495.00 USD

Neptune Systems Trident and Reagent

$495.00 USD

ApexEL Controller - Neptune Apex Controller Wifi Model - Entry Level
USA
ApexEL Controller - Neptune Apex...

$499.95 USD

ApexEL Controller - Neptune Apex...

$499.95 USD

Brand New GHL Profilux Plus II Aquarium Controller
USA
Brand New GHL Profilux Plus II...

$125.00 USD

Brand New GHL Profilux Plus II...

$125.00 USD

Milwaukee Instruments MC720, MC122 + MP810 COMBO pH Controller + Dosing Pump
USA
Milwaukee Instruments MC720, MC122 +...

$215.00 USD

Milwaukee Instruments MC720, MC122 +...

$215.00 USD

Neptune Systems Apex AWM AI Wireless Control Module
USA
Neptune Systems Apex AWM AI Wireless...

$199.00 USD

Neptune Systems Apex AWM AI Wireless...

$199.00 USD

Neptune Apex - Aquarium Controller w/ WiFi, wit probes- free shipping
USA
Neptune Apex - Aquarium Controller w/...

$749.99 USD

Neptune Apex - Aquarium Controller w/...

$749.99 USD

Digital Aquatics DA Reefkeeper RKM-PC4 Power Module Controller
USA
Digital Aquatics DA Reefkeeper...

$65.00 USD

Digital Aquatics DA Reefkeeper...

$65.00 USD

Neptune Apex Classic Lite, EB 8, PM1, Display, Probes, Cable, Probe Holder
USA
Neptune Apex Classic Lite, EB 8, PM1,...

$249.99 USD

Neptune Apex Classic Lite, EB 8, PM1,...

$249.99 USD

Hanna Instruments Ultra Low Range Phosphate Checker ULR HI774, Saltwater Reef
USA
Hanna Instruments Ultra Low Range...

$49.95 USD

Hanna Instruments Ultra Low Range...

$49.95 USD

Digital Aquatics DA Reefkeeper RKM-PC4 Power Module Controller
USA
Digital Aquatics DA Reefkeeper...

$62.00 USD

Digital Aquatics DA Reefkeeper...

$62.00 USD

Icecap Salinity/Temperature Digital Tester Saltwater Aquariums Refractomer NEW
USA
Icecap Salinity/Temperature Digital...

$69.99 USD

Icecap Salinity/Temperature Digital...

$69.99 USD

AMERICAN MARINE PINPOINT ORP MONITOR INCLUDES PROBE & CALIBRATION FLUIDS
USA
AMERICAN MARINE PINPOINT ORP MONITOR...

$114.98 USD

AMERICAN MARINE PINPOINT ORP MONITOR...

$114.98 USD

Coralvue Hydros Control 4 - 5 Button Box (0-10V Input Port) (Wave Engine)
USA
Coralvue Hydros Control 4 - 5 Button...

$84.99 USD

Coralvue Hydros Control 4 - 5 Button...

$84.99 USD

AQUANEAT Aquarium Thermometer Digital Fish Tank Temperature 2PCS
USA
AQUANEAT Aquarium Thermometer Digital...

$7.39 USD

AQUANEAT Aquarium Thermometer Digital...

$7.39 USD

Duetto Dual-Sensor ATO Aquarium Auto-Top-Off System - XP Aqua
USA
Duetto Dual-Sensor ATO Aquarium...

$119.99 USD

Duetto Dual-Sensor ATO Aquarium...

$119.99 USD

1 Aquarium Fish Tank Thermometer Temp Sticker Stick on **FAHRENHEIT IN BOLD!**
USA
1 Aquarium Fish Tank Thermometer Temp...

$1.95 USD

1 Aquarium Fish Tank Thermometer Temp...

$1.95 USD

Aquarium Fish Tank Thermometer Temp Sticker Stick on **FAHRENHEIT IN BOLD!**
USA
Aquarium Fish Tank Thermometer Temp...

$1.95 USD

Aquarium Fish Tank Thermometer Temp...

$1.95 USD

MW600 Dissolved Oxygen Meter - Milwaukee Instruments
USA
MW600 Dissolved Oxygen Meter -...

$208.00 USD

MW600 Dissolved Oxygen Meter -...

$208.00 USD

US PLUG Inkbird Digital Thermostat Wifi Aquarium Thermometer C929A Dual Probes
USA
US PLUG Inkbird Digital Thermostat...

$39.99 USD

US PLUG Inkbird Digital Thermostat...

$39.99 USD

Reef Angel Plus Aquarium Controller
USA
Reef Angel Plus Aquarium Controller

$200.00 USD

Reef Angel Plus Aquarium Controller

$200.00 USD

Hydros WaveEngine ETM Wireless Multi Pump Controller- free shipping
USA
Hydros WaveEngine ETM Wireless Multi...

$324.99 USD

Hydros WaveEngine ETM Wireless Multi...

$324.99 USD

Smart Skimmer Security - AutoAqua
USA
Smart Skimmer Security - AutoAqua

$59.99 USD

Smart Skimmer Security - AutoAqua

$59.99 USD

Breakout Box Special edition for Neptune APEX choose your color
USA
Breakout Box Special edition for...

$59.99 USD

Breakout Box Special edition for...

$59.99 USD

Digital Aquatics DA Reefkeeper RKM-PC4 Power Module Bar Controller & Bus Cable
USA
Digital Aquatics DA Reefkeeper...

$59.99 USD

Digital Aquatics DA Reefkeeper...

$59.99 USD

Digital Aquatics DA Reefkeeper RKM-PC4 Power Module Bar Controller & Bus Cable
USA
Digital Aquatics DA Reefkeeper...

$59.99 USD

Digital Aquatics DA Reefkeeper...

$59.99 USD

Apex Neptune Classic Controller Kit Lot (brain, eb8, temp +ph probe
USA
Apex Neptune Classic Controller Kit...

$279.00 USD

Apex Neptune Classic Controller Kit...

$279.00 USD

Seneye Wi-Fi Web Server
USA
Seneye Wi-Fi Web Server

$279.00 USD

Seneye Wi-Fi Web Server

$279.00 USD

GHL ProfiLux 4 Aquarium Controller Mega-Set 6E - Black- free shipping
USA
GHL ProfiLux 4 Aquarium Controller...

$849.99 USD

GHL ProfiLux 4 Aquarium Controller...

$849.99 USD

Neptune Systems Trident Reagent Kit
USA
Neptune Systems Trident Reagent Kit

$44.99 USD

Neptune Systems Trident Reagent Kit

$44.99 USD

Protein Skimmer Auto Delay Timer - Reef Octopus
USA
Protein Skimmer Auto Delay Timer -...

$44.99 USD

Protein Skimmer Auto Delay Timer -...

$44.99 USD

Weipro PH2010A PH meter and controller (New, Open Box)
USA
Weipro PH2010A PH meter and...

$78.99 USD

Weipro PH2010A PH meter and...

$78.99 USD

AQUANEAT Aquarium Thermometer Digital Fish Tank Terrarium Water Temperature Test
USA
AQUANEAT Aquarium Thermometer Digital...

$5.95 USD

AQUANEAT Aquarium Thermometer Digital...

$5.95 USD

New Digital LCD Fish Tank Aquarium Marine Water Thermometer Temperature Black
USA
New Digital LCD Fish Tank Aquarium...

$5.95 USD

New Digital LCD Fish Tank Aquarium...

$5.95 USD

Voltage Meter for Ecotech Marine Battery Backup
USA
Voltage Meter for Ecotech Marine...

$34.99 USD

Voltage Meter for Ecotech Marine...

$34.99 USD

Coralvue Hydros Control4 0-10v Breakout Box
USA
Coralvue Hydros Control4 0-10v...

$34.99 USD

Coralvue Hydros Control4 0-10v...

$34.99 USD

Dual Digital Heater Controller (ITC-306T) - Inkbird
USA
Dual Digital Heater Controller...

$34.99 USD

Dual Digital Heater Controller...

$34.99 USD

BREAKOUT BOX PLUS For Neptune APEX controller
USA
BREAKOUT BOX PLUS For Neptune APEX...

$34.99 USD

BREAKOUT BOX PLUS For Neptune APEX...

$34.99 USD

Osmolator Nano 3152 Auto Top Off - Tunze
USA
Osmolator Nano 3152 Auto Top Off - Tunze

$99.99 USD

Osmolator Nano 3152 Auto Top Off - Tunze

$99.99 USD

American Marine Pinpoint pH Controller
USA
American Marine Pinpoint pH Controller

$99.99 USD

American Marine Pinpoint pH Controller

$99.99 USD

Neptune Trident MARINE AQUARIUM ANALYZER (Brand New) + 2Mo Free Box of Reagents*
USA
Neptune Trident MARINE AQUARIUM...

$919.00 USD

Neptune Trident MARINE AQUARIUM...

$919.00 USD

Aquasol S020 PH Electrode Controller
USA
Aquasol S020 PH Electrode Controller

$140.00 USD

Aquasol S020 PH Electrode Controller

$140.00 USD

SENEYE+ 6 MONTH REPLACEMENT SLIDE PACK - SENEYE AQUARIUM
USA
SENEYE+ 6 MONTH REPLACEMENT SLIDE...

$72.99 USD

SENEYE+ 6 MONTH REPLACEMENT SLIDE...

$72.99 USD

Milwaukee MC122 pH Controller 115V, for CO2 Dosing/Monitor/Meter/Instruments
USA
Milwaukee MC122 pH Controller 115V,...

$130.00 USD

Milwaukee MC122 pH Controller 115V,...

$130.00 USD

Neptune Systems PMK Par Monitoring Kit
USA
Neptune Systems PMK Par Monitoring Kit

$275.00 USD

Neptune Systems PMK Par Monitoring Kit

$275.00 USD

Coralife Digital Thermometer Good For Terrariums Fresh and Saltwater Aquariums
USA
Coralife Digital Thermometer Good For...

$9.99 USD

Coralife Digital Thermometer Good For...

$9.99 USD

Neptune Systems Apex Classic Controller Orange Brain Only works great
USA
Neptune Systems Apex Classic...

$119.00 USD

Neptune Systems Apex Classic...

$119.00 USD

AutoTopoff Nano - Water Level Controller for Reef Aquarium - Auto Top Off ATO
USA
AutoTopoff Nano - Water Level...

$40.00 USD

AutoTopoff Nano - Water Level...

$40.00 USD

Lab ORP Probe
USA
Lab ORP Probe

$40.00 USD

Lab ORP Probe

$40.00 USD

Aquatic Dosing Container
USA
Aquatic Dosing Container

$25.00 USD

Aquatic Dosing Container

$25.00 USD

3PC Aquarium Digital Thermometer Fish Tank Salt Water Terrarium w/ Extra Battery
USA
3PC Aquarium Digital Thermometer Fish...

$6.59 USD

3PC Aquarium Digital Thermometer Fish...

$6.59 USD

IceCap Liquid Dosing Containers
USA
IceCap Liquid Dosing Containers

$44.98 USD

IceCap Liquid Dosing Containers

$44.98 USD

Kamoer X1 PRO Single WIFI Doser
USA
Kamoer X1 PRO Single WIFI Doser

$89.99 USD

Kamoer X1 PRO Single WIFI Doser

$89.99 USD

Weipro PH2010A PH meter and controller, PH online monitor, good quality reliable
China
Weipro PH2010A PH meter and...

$89.99 USD

Weipro PH2010A PH meter and...

$89.99 USD

Neptune Apex TRIDENT BRAND NEW & Sealed Box FREE FAST SHIPPING IN STOCK
USA
Neptune Apex TRIDENT BRAND NEW &...

$639.00 USD

Neptune Apex TRIDENT BRAND NEW &...

$639.00 USD

Icecap Salinity/Temperature Digital Tester Saltwater Aquariums Refractomer NEW
USA
Icecap Salinity/Temperature Digital...

$45.00 USD

Icecap Salinity/Temperature Digital...

$45.00 USD

AMERICAN MARINE PINPOINT PH CONTROLLER - AQUARIUM WATER TESTER METER
USA
AMERICAN MARINE PINPOINT PH...

$188.99 USD

AMERICAN MARINE PINPOINT PH...

$188.99 USD

US Aquarium ATO Auto Top Off System Smart Water Level Filler Pump Dual Sensors
USA
US Aquarium ATO Auto Top Off System...

$71.99 USD

US Aquarium ATO Auto Top Off System...

$71.99 USD

ORP Monitor
USA
ORP Monitor

$89.00 USD

ORP Monitor

$89.00 USD

BRAND NEW, NEPTUNE systems REEF dosing Dual Reservoir Aquarium Fish Apex DDR
USA
BRAND NEW, NEPTUNE systems REEF...

$184.99 USD

BRAND NEW, NEPTUNE systems REEF...

$184.99 USD

Neptune LDK Leak Detection Probe Fluid Monitoring Module Aquariums Tanks
USA
Neptune LDK Leak Detection Probe...

$149.95 USD

Neptune LDK Leak Detection Probe...

$149.95 USD

Tunze Osmolator 3152 NANO Universal ATO Auto Top Off system missing 3 parts
USA
Tunze Osmolator 3152 NANO Universal...

$75.00 USD

Tunze Osmolator 3152 NANO Universal...

$75.00 USD

Smart Magnetic Stirir for Testing - AutoAqua
USA
Smart Magnetic Stirir for Testing -...

$29.99 USD

Smart Magnetic Stirir for Testing -...

$29.99 USD

Milwaukee MC122 pH Controller Meter
USA
Milwaukee MC122 pH Controller Meter

$110.00 USD

Milwaukee MC122 pH Controller Meter

$110.00 USD

Koralia Smart Wave Pump Controller - Hydor
USA
Koralia Smart Wave Pump Controller -...

$69.95 USD

Koralia Smart Wave Pump Controller -...

$69.95 USD

Mount Bracket Holder for GHL Balling Doser
Russian Federation
Mount Bracket Holder for GHL Balling...

$49.00 USD

Mount Bracket Holder for GHL Balling...

$49.00 USD

Dual Aquarium Fish Tank Thermometer Temperature Sticker Stick-on Fahrenheit USA
USA
Dual Aquarium Fish Tank Thermometer...

$1.99 USD

Dual Aquarium Fish Tank Thermometer...

$1.99 USD

Milwaukee Digitial Seawater Salinity Refractometer
USA
Milwaukee Digitial Seawater Salinity...

$114.00 USD

Milwaukee Digitial Seawater Salinity...

$114.00 USD

Milwaukee MC510 ORP/MV Controller, Probe Included, 115V, SMS510/Monitor/Meter
USA
Milwaukee MC510 ORP/MV Controller,...

$136.00 USD

Milwaukee MC510 ORP/MV Controller,...

$136.00 USD

acryli made Liquid storage bucket 3 rooms 4.5 liters, working with dosing pump
China
acryli made Liquid storage bucket 3...

$49.99 USD

acryli made Liquid storage bucket 3...

$49.99 USD

Aqua Controller Jr Controller Only
USA
Aqua Controller Jr Controller Only

$59.00 USD

Aqua Controller Jr Controller Only

$59.00 USD

American Marine Pinpoint Digital ORP/Redox Monitor with Probe
USA
American Marine Pinpoint Digital...

$59.00 USD

American Marine Pinpoint Digital...

$59.00 USD

SICCE WAVE SURFER CONTROLLER FOR VOYAGER AQUARIUM WATER PUMPS
USA
SICCE WAVE SURFER CONTROLLER FOR...

$86.71 USD

SICCE WAVE SURFER CONTROLLER FOR...

$86.71 USD

AutoTopoff Double - Water Level Controller for Reef Aquarium - Auto Top Off ATO
USA
AutoTopoff Double - Water Level...

$50.00 USD

AutoTopoff Double - Water Level...

$50.00 USD

BRAND NEW! (1) Neptune Apex Trident (In Box & Sealed) - Fast Shipping!
USA
BRAND NEW! (1) Neptune Apex Trident...

$725.00 USD

BRAND NEW! (1) Neptune Apex Trident...

$725.00 USD

SENEYE+ 3 MONTH REPLACEMENT SLIDE PACK - SENEYE REEF AQUARIUM
USA
SENEYE+ 3 MONTH REPLACEMENT SLIDE...

$36.99 USD

SENEYE+ 3 MONTH REPLACEMENT SLIDE...

$36.99 USD

Sentry ATO Optical Auto-Top-Off System Pacific Sun Aquarium Equipment NEW
USA
Sentry ATO Optical Auto-Top-Off...

$57.99 USD

Sentry ATO Optical Auto-Top-Off...

$57.99 USD

Milwaukee MC120 pH Monitor w/probe
USA
Milwaukee MC120 pH Monitor w/probe

$85.99 USD

Milwaukee MC120 pH Monitor w/probe

$85.99 USD

AQUANEAT Aquarium Thermometer Digital Fish Tank Temperature 6 PCS
USA
AQUANEAT Aquarium Thermometer Digital...

$17.89 USD

AQUANEAT Aquarium Thermometer Digital...

$17.89 USD

Aquarium Electronic Salinity and Ph value on-line meter and Monitor 2 probe, NIB
China
Aquarium Electronic Salinity and Ph...

$79.99 USD

Aquarium Electronic Salinity and Ph...

$79.99 USD

MW102 PH & TEMPERATURE METER W/AUTO CALC
USA
MW102 PH & TEMPERATURE METER W/AUTO CALC

$118.00 USD

MW102 PH & TEMPERATURE METER W/AUTO CALC

$118.00 USD

Aquarium Milwaukee Instruments PH & ORP Controller with Probes
USA
Aquarium Milwaukee Instruments PH &...

$150.00 USD

Aquarium Milwaukee Instruments PH &...

$150.00 USD

Apex FMM 1" Flow (FS-100) Sensor with Unions - Neptune Systems
USA
Apex FMM 1" Flow (FS-100) Sensor with...

$55.99 USD

Apex FMM 1" Flow (FS-100) Sensor with...

$55.99 USD

Aquarium Digital Thermometer Fish Tank Salt Water Terrarium with Extra Battery
USA
Aquarium Digital Thermometer Fish...

$15.19 USD

Aquarium Digital Thermometer Fish...

$15.19 USD

New BNC Electrode Probe Connector for PH Aquarium Controller Meter Sensor
USA
New BNC Electrode Probe Connector for...

$13.00 USD

New BNC Electrode Probe Connector for...

$13.00 USD

Milwaukee MC510 ORP Controller w/probe
USA
Milwaukee MC510 ORP Controller w/probe

$141.00 USD

Milwaukee MC510 ORP Controller w/probe

$141.00 USD

Simple Aquarium Auto Top Off System - Marine Magic , Dual Float switch
Hong Kong
Simple Aquarium Auto Top Off System -...

$45.90 USD

Simple Aquarium Auto Top Off System -...

$45.90 USD