Aquarium Meters, Regulators

Digital Aquatics ReefKeeper 2 Controller
Digital Aquatics ReefKeeper 2 Controller
$386.09
Digital Aquatics ReefKeeper 2 Controller
Neptune Aquacontroller 3 (Backlight) w  Temperature Pr
Neptune Aquacontroller 3 (Backlight) w Temperature Pr
$299.99
Neptune Aquacontroller 3 (Backlight) w Temperature Pr
Digital Aquatics ReefKeeper 2 Controller
Digital Aquatics ReefKeeper 2 Controller
$269.99
Digital Aquatics ReefKeeper 2 Controller
Neptune Systems AquaController Jr with Serial Port + T
Neptune Systems AquaController Jr with Serial Port + T
$225.00
Neptune Systems AquaController Jr with Serial Port + T
American Marine Pinpoint pH Controller
American Marine Pinpoint pH Controller
$199.99
American Marine Pinpoint pH Controller
American Marine Pinpoint pH Monitor Package
American Marine Pinpoint pH Monitor Package
$141.27
American Marine Pinpoint pH Monitor Package
American Marine Pinpoint pH Monitor
American Marine Pinpoint pH Monitor
$133.83
American Marine Pinpoint pH Monitor
Aqua Logic Digital Temperature Controller - Single Sta
Aqua Logic Digital Temperature Controller - Single Sta
$130.12
Aqua Logic Digital Temperature Controller - Single Sta
pH Monitor Controller Reef Planted Tank Milwaukee
pH Monitor Controller Reef Planted Tank Milwaukee
$121.95
pH Monitor Controller Reef Planted Tank Milwaukee
7-in-1 Meter Tester ORP ,  PH,  CF,  EC,  TDS (PPM) °F °C a
7-in-1 Meter Tester ORP , PH, CF, EC, TDS (PPM) °F °C a
$119.00
7-in-1 Meter Tester ORP , PH, CF, EC, TDS (PPM) °F °C a
Water Tester Meter Solution Probe ORP pH CF EC TDS PPM
Water Tester Meter Solution Probe ORP pH CF EC TDS PPM
$109.99
Water Tester Meter Solution Probe ORP pH CF EC TDS PPM
PRO CO2 Regulator Solenoid(6 Outlets)+ 6 bubble counter
PRO CO2 Regulator Solenoid(6 Outlets)+ 6 bubble counter
$109.99
PRO CO2 Regulator Solenoid(6 Outlets)+ 6 bubble counter
Milwaukee SMS122 pH Controller,  for CO2 Dosing Monitor
Milwaukee SMS122 pH Controller, for CO2 Dosing Monitor
$107.90
Milwaukee SMS122 pH Controller, for CO2 Dosing Monitor
SMS122 PH monitor CO2 CONTROLLER sms 122 FREE CALIB
SMS122 PH monitor CO2 CONTROLLER sms 122 FREE CALIB
$107.90
SMS122 PH monitor CO2 CONTROLLER sms 122 FREE CALIB
Hanna Instruments Combination pH and ORP Tester
Hanna Instruments Combination pH and ORP Tester
$104.10
Hanna Instruments Combination pH and ORP Tester
 CO2 Regulator & Needle Valve Dual Guage Red Sea
CO2 Regulator & Needle Valve Dual Guage Red Sea
$103.95
CO2 Regulator & Needle Valve Dual Guage Red Sea
American Marine Pinpoint pH Monitor Package
American Marine Pinpoint pH Monitor Package
$98.79
American Marine Pinpoint pH Monitor Package
CO2 Regulator Needle Valve  Gauge Paintball Red Sea
CO2 Regulator Needle Valve Gauge Paintball Red Sea
$97.95
CO2 Regulator Needle Valve Gauge Paintball Red Sea
Wavemaster Pro by Red Sea - Controls 4 PowerHeads
Wavemaster Pro by Red Sea - Controls 4 PowerHeads
$95.00
Wavemaster Pro by Red Sea - Controls 4 PowerHeads
aquacontroller jr
aquacontroller jr
$70.00
$90.00
aquacontroller jr
Digital pH Meter Aquarium Tester + solution  x 4,  Lot 4
Digital pH Meter Aquarium Tester + solution x 4, Lot 4
$79.00
$89.00
Digital pH Meter Aquarium Tester + solution x 4, Lot 4
Azoo CO2 Dual Gauge Magnetic Valve Pressure Regulator
Azoo CO2 Dual Gauge Magnetic Valve Pressure Regulator
$85.49
Azoo CO2 Dual Gauge Magnetic Valve Pressure Regulator
CO2 Dosing Solenoid Control Valve Planted Tank Red Sea
CO2 Dosing Solenoid Control Valve Planted Tank Red Sea
$71.95
CO2 Dosing Solenoid Control Valve Planted Tank Red Sea
Ozone Generator + Air Dryer + Timer Redox,  for 110V
Ozone Generator + Air Dryer + Timer Redox, for 110V
$49.00
$69.00
Ozone Generator + Air Dryer + Timer Redox, for 110V
Ozone Generator + Air Dryer + Timer Redox,  for 110V a
Ozone Generator + Air Dryer + Timer Redox, for 110V a
$49.00
$69.00
Ozone Generator + Air Dryer + Timer Redox, for 110V a
NEW CO2 Regulator Solenoid Complete Kit
NEW CO2 Regulator Solenoid Complete Kit
$68.99
NEW CO2 Regulator Solenoid Complete Kit
NEW CO2 Regulator Solenoid and FREE Bubble Counter
NEW CO2 Regulator Solenoid and FREE Bubble Counter
$64.99
NEW CO2 Regulator Solenoid and FREE Bubble Counter
Tsunami Pump Protector Refugium Sump Water Level
Tsunami Pump Protector Refugium Sump Water Level
$64.95
Tsunami Pump Protector Refugium Sump Water Level
Tsunami Auto-Top Off Aquarium Water Level Controller
Tsunami Auto-Top Off Aquarium Water Level Controller
$64.95
Tsunami Auto-Top Off Aquarium Water Level Controller
Hagen Aquarium Master Test Kit Case for FW and SW
Hagen Aquarium Master Test Kit Case for FW and SW
$61.22
Hagen Aquarium Master Test Kit Case for FW and SW
Pet fish aquarium  Nutrafin Profeed programmable Feeder
Pet fish aquarium Nutrafin Profeed programmable Feeder
$59.99
Pet fish aquarium Nutrafin Profeed programmable Feeder
BlueLine Salinity Saltwater Refractometer w ATC
BlueLine Salinity Saltwater Refractometer w ATC
$59.95
BlueLine Salinity Saltwater Refractometer w ATC
Kordon - Fresh Water Master Aquarium Test Kit #35810
Kordon - Fresh Water Master Aquarium Test Kit #35810
$45.00
$59.75
Kordon - Fresh Water Master Aquarium Test Kit #35810
Kent Marine Float Valve Kit For RO and RO DI Units
Kent Marine Float Valve Kit For RO and RO DI Units
$52.99
Kent Marine Float Valve Kit For RO and RO DI Units
Milwaukee PH55 Waterproof pH Temp Tester Meter Martini
Milwaukee PH55 Waterproof pH Temp Tester Meter Martini
$50.00
Milwaukee PH55 Waterproof pH Temp Tester Meter Martini
Milwaukee pH51 Waterproof pH Tester Meter Sharp w  Case
Milwaukee pH51 Waterproof pH Tester Meter Sharp w Case
$49.50
Milwaukee pH51 Waterproof pH Tester Meter Sharp w Case
Milwaukee pH51 Waterproof pH Tester Meter,  pH 51
Milwaukee pH51 Waterproof pH Tester Meter, pH 51
$49.50
Milwaukee pH51 Waterproof pH Tester Meter, pH 51
American Marine Pinpoint pH Probe
American Marine Pinpoint pH Probe
$48.39
American Marine Pinpoint pH Probe
Salinity Refractometer Pro Aquarium Series 2008 Model
Salinity Refractometer Pro Aquarium Series 2008 Model
$39.99
Salinity Refractometer Pro Aquarium Series 2008 Model
CO2 Needle Valve Planted Aquarium Reactor Red Sea
CO2 Needle Valve Planted Aquarium Reactor Red Sea
$39.95
CO2 Needle Valve Planted Aquarium Reactor Red Sea
Digital LED Heater & Chiller Controller ATC 800  NIB!!!
Digital LED Heater & Chiller Controller ATC 800 NIB!!!
$37.99
Digital LED Heater & Chiller Controller ATC 800 NIB!!!
Milwaukee MA911B 2 pH Electrode,  SMS120 SMS122 SMS125
Milwaukee MA911B 2 pH Electrode, SMS120 SMS122 SMS125
$37.00
Milwaukee MA911B 2 pH Electrode, SMS120 SMS122 SMS125
Turbo CO2 Bio System Generator Plant Aquarium Red Sea
Turbo CO2 Bio System Generator Plant Aquarium Red Sea
$35.95
Turbo CO2 Bio System Generator Plant Aquarium Red Sea
100 LED Solar Power String Light Christmas Fairy RED
100 LED Solar Power String Light Christmas Fairy RED
$31.99
100 LED Solar Power String Light Christmas Fairy RED
100 LED Solar Power String Light Christmas Fairy RED
100 LED Solar Power String Light Christmas Fairy RED
$31.99
100 LED Solar Power String Light Christmas Fairy RED
ProQuatics  Automatic Fish Feeder
ProQuatics Automatic Fish Feeder
$9.99
$30.00
ProQuatics Automatic Fish Feeder
Neptune Systems AquaController SERIPC9 Serial Connector
Neptune Systems AquaController SERIPC9 Serial Connector
$30.00
Neptune Systems AquaController SERIPC9 Serial Connector
Pet fish aquarium Hagen NutraMatic 2X Fish Food Feeder
Pet fish aquarium Hagen NutraMatic 2X Fish Food Feeder
$29.99
Pet fish aquarium Hagen NutraMatic 2X Fish Food Feeder
HM Digital Handheld TDS-3 Meter NIB
HM Digital Handheld TDS-3 Meter NIB
$29.99
HM Digital Handheld TDS-3 Meter NIB
pH Meter + Adaptor + Electrode ,  Continuous Monitor
pH Meter + Adaptor + Electrode , Continuous Monitor
$29.90
pH Meter + Adaptor + Electrode , Continuous Monitor
Hanna pH TESTER,  METER Aquarium Hydroponics Lab
Hanna pH TESTER, METER Aquarium Hydroponics Lab
$28.05
Hanna pH TESTER, METER Aquarium Hydroponics Lab
Auto Shutoff Float Valve Coralife R O Kit Aquarium
Auto Shutoff Float Valve Coralife R O Kit Aquarium
$27.95
Auto Shutoff Float Valve Coralife R O Kit Aquarium
Float Valve Reverse Osmosis Tank Auto RO Kent Marine
Float Valve Reverse Osmosis Tank Auto RO Kent Marine
$25.95
Float Valve Reverse Osmosis Tank Auto RO Kent Marine
Red Sea CO2 Diffuser Reactor 200  & Bubble Counter
Red Sea CO2 Diffuser Reactor 200 & Bubble Counter
$24.95
Red Sea CO2 Diffuser Reactor 200 & Bubble Counter
Hagen Aquarium Master Test Kit mini for FW and SW
Hagen Aquarium Master Test Kit mini for FW and SW
$23.90
Hagen Aquarium Master Test Kit mini for FW and SW
Pocket Aquarium Pool TDS Meter  Thermometer  4TM
Pocket Aquarium Pool TDS Meter Thermometer 4TM
$23.95
Pocket Aquarium Pool TDS Meter Thermometer 4TM
CO2 Refill Turbo Bio System 3 Pack Planted Tank Red Sea
CO2 Refill Turbo Bio System 3 Pack Planted Tank Red Sea
$22.95
CO2 Refill Turbo Bio System 3 Pack Planted Tank Red Sea
Digital Hygrometer Thermometer Hydro AmphibianTom
Digital Hygrometer Thermometer Hydro AmphibianTom
$22.95
Digital Hygrometer Thermometer Hydro AmphibianTom
Hamilton 24hr Digital Timer with 2-Outlets
Hamilton 24hr Digital Timer with 2-Outlets
$22.01
Hamilton 24hr Digital Timer with 2-Outlets
Digital pH TESTER pH600 Aquariums Reef Tanks RO Water
Digital pH TESTER pH600 Aquariums Reef Tanks RO Water
$21.95
Digital pH TESTER pH600 Aquariums Reef Tanks RO Water
Digital Aquarium Thermometer Temperature Alert Tom
Digital Aquarium Thermometer Temperature Alert Tom
$21.95
Digital Aquarium Thermometer Temperature Alert Tom
Aqua pharmaceutical master test kit freshwater test inc
Aqua pharmaceutical master test kit freshwater test inc
$21.26
Aqua pharmaceutical master test kit freshwater test inc
EC Conductivity Tester Hydroponics Nutrient mS cm a
EC Conductivity Tester Hydroponics Nutrient mS cm a
$20.90
EC Conductivity Tester Hydroponics Nutrient mS cm a
High Accuracy pH Meter + 2 Solution,  Aquarium,  Tester a
High Accuracy pH Meter + 2 Solution, Aquarium, Tester a
$19.90
High Accuracy pH Meter + 2 Solution, Aquarium, Tester a
Nutramatic 2x Automatic Feeder
Nutramatic 2x Automatic Feeder
$18.99
Nutramatic 2x Automatic Feeder
CO2 Bubble Counter with Check Valve from Red Sea
CO2 Bubble Counter with Check Valve from Red Sea
$18.95
CO2 Bubble Counter with Check Valve from Red Sea
Pocket Pen Aquarium Pool TDS Meter Monitor
Pocket Pen Aquarium Pool TDS Meter Monitor
$17.95
Pocket Pen Aquarium Pool TDS Meter Monitor
Auto Water Filler in your Tank ~ Avoid no water!
Auto Water Filler in your Tank ~ Avoid no water!
$15.50
Auto Water Filler in your Tank ~ Avoid no water!
Auto Water Filler in your Tank ~ Avoid no water!
Auto Water Filler in your Tank ~ Avoid no water!
$15.50
Auto Water Filler in your Tank ~ Avoid no water!
Float Valve Assembly R O Reverse Osmosis Coralife
Float Valve Assembly R O Reverse Osmosis Coralife
$13.95
Float Valve Assembly R O Reverse Osmosis Coralife
CO2 Indicator Real Time CO2 Monitor Test Red Sea
CO2 Indicator Real Time CO2 Monitor Test Red Sea
$12.95
CO2 Indicator Real Time CO2 Monitor Test Red Sea
Aquarium Hydrometer Digital Thermometer Red Sea
Aquarium Hydrometer Digital Thermometer Red Sea
$12.95
Aquarium Hydrometer Digital Thermometer Red Sea
Aquarium Flow Meter use on UV Reactor Canister TOM
Aquarium Flow Meter use on UV Reactor Canister TOM
$12.95
Aquarium Flow Meter use on UV Reactor Canister TOM
Mardel Aquarium In-Tank pH Meter (3 Month Supply)
Mardel Aquarium In-Tank pH Meter (3 Month Supply)
$12.00
Mardel Aquarium In-Tank pH Meter (3 Month Supply)
Aqua-Reminder Programmable Electronic aquarium Alert
Aqua-Reminder Programmable Electronic aquarium Alert
$12.00
Aqua-Reminder Programmable Electronic aquarium Alert
220ml TDS Calibration Solution 1, 382 ppm  Milwaukee
220ml TDS Calibration Solution 1, 382 ppm Milwaukee
$10.95
220ml TDS Calibration Solution 1, 382 ppm Milwaukee
pH 4.01 Buffer Calibration Solution 220ml Milwaukee
pH 4.01 Buffer Calibration Solution 220ml Milwaukee
$10.95
pH 4.01 Buffer Calibration Solution 220ml Milwaukee
220ml Cleaning Solution for pH ORP Probe Milwaukee
220ml Cleaning Solution for pH ORP Probe Milwaukee
$10.95
220ml Cleaning Solution for pH ORP Probe Milwaukee
pH 10.01 Buffer Calibration Solution 220ml Milwaukee
pH 10.01 Buffer Calibration Solution 220ml Milwaukee
$10.95
pH 10.01 Buffer Calibration Solution 220ml Milwaukee
220ml Storage Solution for pH ORP Probe Milwaukee
220ml Storage Solution for pH ORP Probe Milwaukee
$10.95
220ml Storage Solution for pH ORP Probe Milwaukee
Red Sea Hydrometer w  Digital Thermometer Saltwater NEW
Red Sea Hydrometer w Digital Thermometer Saltwater NEW
$9.99
Red Sea Hydrometer w Digital Thermometer Saltwater NEW
0505120 Rotor,  shaft and bearing for Tunze
0505120 Rotor, shaft and bearing for Tunze
$9.99
0505120 Rotor, shaft and bearing for Tunze
MARINA AQUA-MINDER - PROGRAMMABLE AQUARIUM ALARM - NEW
MARINA AQUA-MINDER - PROGRAMMABLE AQUARIUM ALARM - NEW
$7.99
$9.99
MARINA AQUA-MINDER - PROGRAMMABLE AQUARIUM ALARM - NEW
MARINA AQUA-MINDER - PROGRAMMABLE AQUARIUM ALARM - NEW
MARINA AQUA-MINDER - PROGRAMMABLE AQUARIUM ALARM - NEW
$7.99
$9.99
MARINA AQUA-MINDER - PROGRAMMABLE AQUARIUM ALARM - NEW
MARINA AQUA-MINDER - PROGRAMMABLE AQUARIUM ALARM - NEW
MARINA AQUA-MINDER - PROGRAMMABLE AQUARIUM ALARM - NEW
$7.99
$9.99
MARINA AQUA-MINDER - PROGRAMMABLE AQUARIUM ALARM - NEW
INSTANT OCEAN PH AQUARIUM TANK WATER TEST TESTING KIT
INSTANT OCEAN PH AQUARIUM TANK WATER TEST TESTING KIT
$8.99
INSTANT OCEAN PH AQUARIUM TANK WATER TEST TESTING KIT
Digital indoor outdoor thermometer and hygrometer
Digital indoor outdoor thermometer and hygrometer
$8.50
Digital indoor outdoor thermometer and hygrometer
Aquarium digital probe thermometer ST-01 with sensor
Aquarium digital probe thermometer ST-01 with sensor
$8.00
Aquarium digital probe thermometer ST-01 with sensor
Digital Aquarium Thermometer also Terrarium Vivarium bl
Digital Aquarium Thermometer also Terrarium Vivarium bl
$6.95
$7.99
Digital Aquarium Thermometer also Terrarium Vivarium bl
Digital Aquarium Thermometer also Terrarium Vivarium bl
Digital Aquarium Thermometer also Terrarium Vivarium bl
$6.95
$7.99
Digital Aquarium Thermometer also Terrarium Vivarium bl
Digital Aquarium Thermometer also Terrarium Vivarium bl
Digital Aquarium Thermometer also Terrarium Vivarium bl
$6.95
$7.99
Digital Aquarium Thermometer also Terrarium Vivarium bl
Marineland 24hr Aquirium Light Pump Timer Fish Tank NEW
Marineland 24hr Aquirium Light Pump Timer Fish Tank NEW
$7.99
Marineland 24hr Aquirium Light Pump Timer Fish Tank NEW
Reverse Osmosis Filter Pool Water Pressure Gauge
Reverse Osmosis Filter Pool Water Pressure Gauge
$7.95
Reverse Osmosis Filter Pool Water Pressure Gauge
Refill for Red Sea Planted CO2 Turbo Bio System
Refill for Red Sea Planted CO2 Turbo Bio System
$7.95
Refill for Red Sea Planted CO2 Turbo Bio System
Aqua pharmaceutical test kit freshwater saltwater nitra
Aqua pharmaceutical test kit freshwater saltwater nitra
$7.86
Aqua pharmaceutical test kit freshwater saltwater nitra
Coralife battery oper digitl therm
Coralife battery oper digitl therm
$7.86
Coralife battery oper digitl therm
Aquarium Digital Thermometer Fish Tank Water
Aquarium Digital Thermometer Fish Tank Water
$7.45
$7.50
Aquarium Digital Thermometer Fish Tank Water
Aquarium Digital Thermometer Fish Tank Water
Aquarium Digital Thermometer Fish Tank Water
$7.45
$7.50
Aquarium Digital Thermometer Fish Tank Water
Aquarium Digital Thermometer Fish Tank Water Probe
Aquarium Digital Thermometer Fish Tank Water Probe
$7.50
Aquarium Digital Thermometer Fish Tank Water Probe
Submersible Aquarium Digital Thermometer Water Celsius
Submersible Aquarium Digital Thermometer Water Celsius
$7.50
Submersible Aquarium Digital Thermometer Water Celsius