A 335,000 U.S. gallon (1.3 million liter) aquarium at the Monterey Bay Aquarium in California displaying a simulated kelp forest ecosystemSouth East Asian fish in the aquarium at Bristol Zoo, Bristol, England. The tank is about 2 metres (6 feet) high.Koi have been kept in decorative ponds for centuries in China and Japan.

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Aquarium Meters, Regulators

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Seneye Reef — Automatic Tropical Aquarium Monitoring SystemSeneye Reef — Automatic Tropical Aquarium Monitoring System $219.00 Milwaukee Mc125 pH/Orp Controller w/probeMilwaukee Mc125 pH/Orp Controller w/probe $203.00
New listing
		Atc Refractometer Salinity Tester, portable Saltwater Aquarium Fish Tank SaltNew listing Atc Refractometer Salinity Tester, portable Saltwater Aquarium Fish Tank Salt $9.99 New Lcd Digital Aquarium Thermometer Fish Tank Reptile Marine Water TemperatureNew Lcd Digital Aquarium Thermometer Fish Tank Reptile Marine Water Temperature $10.75
Complete Ato & Surface Skimmer For Sumpless Aquariums - Xp AquaComplete Ato & Surface Skimmer For Sumpless Aquariums - Xp Aqua $149.99 Breakout Box for Neptune Apex Aquarium ControllerBreakout Box for Neptune Apex Aquarium Controller $29.00
1 Ea Dual Aquarium Fish Tank Thermometer Stick-on C*&F*C free ship fast ship1 Ea Dual Aquarium Fish Tank Thermometer Stick-on C*&F*C free ship fast ship $2.37 Tunze Osmolator Universal 3155 Aquarium Auto Top Off System - 3155Tunze Osmolator Universal 3155 Aquarium Auto Top Off System - 3155 $198.99
Hagen Marina Floating Thermometer Fish Aquarium Celsius & FahrenheitHagen Marina Floating Thermometer Fish Aquarium Celsius & Fahrenheit $5.99 New listing
		Breakout Box Plus For Neptune Apex controllerNew listing Breakout Box Plus For Neptune Apex controller $35.99
Milwaukee Instruments Ph56 Waterproof pH Temp Tester Meter, Martini, Ph52 Ph53Milwaukee Instruments Ph56 Waterproof pH Temp Tester Meter, Martini, Ph52 Ph53 $75.00 Bubble Magus Seaside Aquatics Magnetic Aquarium Quad (4) Probe Holder Fish TankBubble Magus Seaside Aquatics Magnetic Aquarium Quad (4) Probe Holder Fish Tank $23.99
Milwaukee Instruments Sea Water Digital Refractometer Water Tester Ma887Milwaukee Instruments Sea Water Digital Refractometer Water Tester Ma887 $114.00 List price:  Previous Price $139.99 1 Aquarium Fish Tank Thermometer Temp Sticker Stick on *Fahrenheit In Bold!*1 Aquarium Fish Tank Thermometer Temp Sticker Stick on *Fahrenheit In Bold!* $1.95
Milwaukee Mc122 pH Controller 115V, for Co2 Dosing/Monitor/Meter/Inst rumentsMilwaukee Mc122 pH Controller 115V, for Co2 Dosing/Monitor/Meter/Inst ruments $130.00 New listing
		Neptune Systems Full Apex Controller Wifi (Brand New)New listing Neptune Systems Full Apex Controller Wifi (Brand New) $799.99
Tunze Osmolator Universal Ato 3155 - Aquarium Water Refill System Auto Top OffTunze Osmolator Universal Ato 3155 - Aquarium Water Refill System Auto Top Off $189.99 Jbj Auto Top Off (Ato) w/float sensorsJbj Auto Top Off (Ato) w/float sensors $79.95
Pinpoint Salinity MonitorPinpoint Salinity Monitor $103.00 Seneye Home Aquarium Monitor - SeneyeSeneye Home Aquarium Monitor - Seneye $149.00
American Marine Pinpoint Ph Controller - Aquarium Water Tester MeterAmerican Marine Pinpoint Ph Controller - Aquarium Water Tester Meter $188.99 Aquarium Ato Auto Top Off System Smart Water Level Filler Pump Tank+2 sensors UsAquarium Ato Auto Top Off System Smart Water Level Filler Pump Tank+2 sensors Us $79.90
Aquaneat Aquarium Digital Thermometer Fish Tank Water Extra Batteries TerrariumAquaneat Aquarium Digital Thermometer Fish Tank Water Extra Batteries Terrarium $9.22 to $41.03 Was:  Previous Price $25.79 Neptune Apex Trident with 2 months Extra reagents! Ships Same Day! Sealed New!Neptune Apex Trident with 2 months Extra reagents! Ships Same Day! Sealed New! $890.00
Sybon Portable RefractometerSybon Portable Refractometer $25.00 Duetto Dual-Sensor Ato Aquarium Auto-Top-Off System - Xp Aqua New Open BoxDuetto Dual-Sensor Ato Aquarium Auto-Top-Off System - Xp Aqua New Open Box $119.99
ApexEl Controller - Neptune Apex Controller Wifi Model - free shippingApexEl Controller - Neptune Apex Controller Wifi Model - free shipping $489.99 Grow Bro Co2 Generator Refill Kit For Planted Aquariums organic bio co2Grow Bro Co2 Generator Refill Kit For Planted Aquariums organic bio co2 $15.99
Aquarium Fish Tank Reptile Waterproof Digital Lcd Temperature Thermometer ℉Aquarium Fish Tank Reptile Waterproof Digital Lcd Temperature Thermometer ℉ Up Ph Controller Monitor w/probe electrode Bnc Adapter Buffer for Aquarium FishUp Ph Controller Monitor w/probe electrode Bnc Adapter Buffer for Aquarium Fish $153.24
Milwaukee Mc510 Orp Controller w/probeMilwaukee Mc510 Orp Controller w/probe $141.00 St International Aquarium Ph Instrument 3 in 1 Monitor Controller ThermometerSt International Aquarium Ph Instrument 3 in 1 Monitor Controller Thermometer $190.00
Smart Skimmer Security Optical On/Off Sensor Protein - AutoaquaSmart Skimmer Security Optical On/Off Sensor Protein - Autoaqua $59.99 Milwaukee- Mc122 Ph Controller With Mounting Kit And Probe Holder Co2 DosingMilwaukee- Mc122 Ph Controller With Mounting Kit And Probe Holder Co2 Dosing $130.00
Tunze Water Level Osmolator Nano 3152 Automatic Aquarium Water Top Off AtoTunze Water Level Osmolator Nano 3152 Automatic Aquarium Water Top Off Ato $99.99 Neptune Trident Bottle Tube Guide 3 packNeptune Trident Bottle Tube Guide 3 pack $14.99
Tunze Turbelle NanoStream 6040 Controllable Pump w/ Controller ElectronicTunze Turbelle NanoStream 6040 Controllable Pump w/ Controller Electronic $157.78 Tunze Osmolator Nano 3152 - Aquarium Automatic Refill System Ato Auto Top OTunze Osmolator Nano 3152 - Aquarium Automatic Refill System Ato Auto Top O $99.99
neptune systems apexneptune systems apex $400.00 Neptune Apex Display MountNeptune Apex Display Mount $14.99
Hanna Instruments Hi713 Phosphate Low Range Reagents 25 TestHanna Instruments Hi713 Phosphate Low Range Reagents 25 Test $12.90 Milwaukee Instruments Mc720, Mc122 + Mp810 Combo pH Controller + Dosing PumpMilwaukee Instruments Mc720, Mc122 + Mp810 Combo pH Controller + Dosing Pump $215.00
Lcd Digital Fish Aquarium Thermometer Water Terrarium Black Free Extra BatteriesLcd Digital Fish Aquarium Thermometer Water Terrarium Black Free Extra Batteries $5.59 Milwaukee Ma887 Digital Saltwater Refractometer with CaseMilwaukee Ma887 Digital Saltwater Refractometer with Case $136.00
Seneye Usb Magnetic Holders for Seneye Home or Seneye Reef Monitoring SystemsSeneye Usb Magnetic Holders for Seneye Home or Seneye Reef Monitoring Systems $49.00 to $59.00 Seneye Web Server (Non Wifi) - SeneyeSeneye Web Server (Non Wifi) - Seneye $199.00
American Marine Pinpoint pH Monitor + probe and calibration fluidAmerican Marine Pinpoint pH Monitor + probe and calibration fluid $85.39 Smart Water Level Security Optical Sensor On/Off - AutoaquaSmart Water Level Security Optical Sensor On/Off - Autoaqua $59.99
Tunze Nano Osmolator 3152 - Auto Top Off for Aquarium - Everything IncludedTunze Nano Osmolator 3152 - Auto Top Off for Aquarium - Everything Included $98.98 Deltec Dd Atc Seawater Refractometer - Measure Salinity Saltwater Reef AquariumDeltec Dd Atc Seawater Refractometer - Measure Salinity Saltwater Reef Aquarium $69.99
Seneye Reef MonitorSeneye Reef Monitor $199.99 New listing
		Apex Fmm Flow Sensor – 1″ (Fs-100) w/Unions - Neptune Systems Free Shipping SaleNew listing Apex Fmm Flow Sensor – 1″ (Fs-100) w/Unions - Neptune Systems Free Shipping Sale $70.00
Pinpoint Ph Controllers American Marine Huge SalePinpoint Ph Controllers American Marine Huge Sale $165.00 Neptune Systems Optical Level Sensor Os-1 for AquariumNeptune Systems Optical Level Sensor Os-1 for Aquarium $20.50
Lcd Digital Fish Tank Reptile Aquarium Water Marine Thermometer Temperature UsLcd Digital Fish Tank Reptile Aquarium Water Marine Thermometer Temperature Us $5.99 Neptune Apex Trident New Sealed Box Ready to ship!Neptune Apex Trident New Sealed Box Ready to ship! $875.00
ApexEl Controller - Neptune Apex Controller Wifi Model - Entry LevelApexEl Controller - Neptune Apex Controller Wifi Model - Entry Level $499.95 Neptune Systems Apex Controller SystemNeptune Systems Apex Controller System $505.00
Water Level Controller Auto Top off System Auto Water Filler Aquarium Ato SystemWater Level Controller Auto Top off System Auto Water Filler Aquarium Ato System $16.99 Pinpoint Orp (Redox) ControllersPinpoint Orp (Redox) Controllers $135.00
Hanna Checker Marine Alkalinity Hi755Hanna Checker Marine Alkalinity Hi755 $49.95 Lcd Digital Fish Tank Reptile Aquarium Water Meter Thermometer Temperature BlackLcd Digital Fish Tank Reptile Aquarium Water Meter Thermometer Temperature Black $6.99
AutoTopoff Nano - Water Level Controller for Reef Aquarium - Auto Top Off AtoAutoTopoff Nano - Water Level Controller for Reef Aquarium - Auto Top Off Ato $40.00 Smart Skimmer Security Optical On/Off Sensor Protein SkimmerSmart Skimmer Security Optical On/Off Sensor Protein Skimmer $59.99
3D Printed Neptune Systems Trident Reagent Guide3D Printed Neptune Systems Trident Reagent Guide $13.95 AutoTopoff Double - Water Level Controller for Reef Aquarium - Auto Top Off AtoAutoTopoff Double - Water Level Controller for Reef Aquarium - Auto Top Off Ato $50.00
Milwaukee Mw700 Lux Light Meter w/probeMilwaukee Mw700 Lux Light Meter w/probe $75.00 Seneye Reef Kit W/Wifi & Dri Box Aquarium Monitor - SeneyeSeneye Reef Kit W/Wifi & Dri Box Aquarium Monitor - Seneye $469.00
Marina Floating Thermometer Fish Aquarium Celsius & FahrenheitMarina Floating Thermometer Fish Aquarium Celsius & Fahrenheit $3.99 Soil Test Kit Tester pH Test Light Npk Levels Rapitest Ground #1601 (40 Test)Soil Test Kit Tester pH Test Light Npk Levels Rapitest Ground #1601 (40 Test) $15.39
Salinity Refractometer Meter Water Reader Marine 0~10% Salt Aquarium Test TesterSalinity Refractometer Meter Water Reader Marine 0~10% Salt Aquarium Test Tester $19.98 Aquarium Ato Auto Top Off System Smart Water Level Filler Pump with Dual SensorAquarium Ato Auto Top Off System Smart Water Level Filler Pump with Dual Sensor $78.90
Aquarium Fish Tank Accessory Glass Float Hydrometer & Thermometer Salt MarineAquarium Fish Tank Accessory Glass Float Hydrometer & Thermometer Salt Marine $3.99 Ecotech Marine Reeflink - Used Great ConditionEcotech Marine Reeflink - Used Great Condition $72.00
Sicce Wave Surfer Controller For Voyager Aquarium Water PumpsSicce Wave Surfer Controller For Voyager Aquarium Water Pumps $86.71 Apogee Submersible Sensor WandApogee Submersible Sensor Wand $69.99
American Marine Pinpoint Lab pH ProbeAmerican Marine Pinpoint Lab pH Probe $39.90 Marinepure Biofilter 1.5" Spheres (2 Quart) Aquarium Filter Media - CermediaMarinepure Biofilter 1.5" Spheres (2 Quart) Aquarium Filter Media - Cermedia $28.89
*New* Aquatek Aquarium Co2 Regulator Mini with Integrated Cool Touch Solenoid*New* Aquatek Aquarium Co2 Regulator Mini with Integrated Cool Touch Solenoid $69.99 Tunze Osmolator 3152 Nano Universal Ato Auto Top Off system-New arrival 2019Tunze Osmolator 3152 Nano Universal Ato Auto Top Off system-New arrival 2019 $116.00
Ghl Proflux Led ControlGhl Proflux Led Control $100.00 Digital Aquatics Reefkeeper Expansion Socket For Saltwater Reef AquariumDigital Aquatics Reefkeeper Expansion Socket For Saltwater Reef Aquarium $69.99
Tank saver for use with Neptune Eb8 energy bars . stop burning out your plug barTank saver for use with Neptune Eb8 energy bars . stop burning out your plug bar $230.00 2 pcs Lcd Digital Fish Aquarium Thermometer Water Terrarium Black Free Batteries2 pcs Lcd Digital Fish Aquarium Thermometer Water Terrarium Black Free Batteries $6.95
Mount for Apex 24v SolenoidMount for Apex 24v Solenoid $12.99 Aquatop Floating Glass Aquarium Thermometer w/ Suction Cup Mount Free ShippingAquatop Floating Glass Aquarium Thermometer w/ Suction Cup Mount Free Shipping $6.95
Milwaukee- Mw600 Dissolved Oxygen Do Meter - Checker TesterMilwaukee- Mw600 Dissolved Oxygen Do Meter - Checker Tester $172.00 Dual Aquarium Fish Tank Thermometer Temperature Sticker Stick-on Fahrenheit °FDual Aquarium Fish Tank Thermometer Temperature Sticker Stick-on Fahrenheit °F $2.54
Reef Fanatic Auto Top Off - Level Controller Ato - 2 sensorReef Fanatic Auto Top Off - Level Controller Ato - 2 sensor $83.99 Aquarium Co2 Diffuser Corner for Fish Tank Water Plants 4/6mm Tubeing SolenoidAquarium Co2 Diffuser Corner for Fish Tank Water Plants 4/6mm Tubeing Solenoid $9.90
Ultimate 4-Sensor Ato Aquarium Auto-Top-Off System - Xp AquaUltimate 4-Sensor Ato Aquarium Auto-Top-Off System - Xp Aqua $199.99 Duetto Dual-Sensor Ato Aquarium Auto-Top-Off System - Xp AquaDuetto Dual-Sensor Ato Aquarium Auto-Top-Off System - Xp Aqua $119.99
American Marine Pinpoint Wireless Thermometer Fish & Aquariums Free ShippingAmerican Marine Pinpoint Wireless Thermometer Fish & Aquariums Free Shipping $49.07 Set Of 5 Temperature 93-64 Fahrenheit degrees Lcd Adhesive Strip ThermometerSet Of 5 Temperature 93-64 Fahrenheit degrees Lcd Adhesive Strip Thermometer $4.44
Pinpoint Orp MonitorPinpoint Orp Monitor $98.00 Breakout Box Special edition for Neptune ApexBreakout Box Special edition for Neptune Apex $59.99
New listing
		Apex Neptune System Aqua Controller And ExtrasNew listing Apex Neptune System Aqua Controller And Extras $250.00 GrowBro Co2 Generator Refill Kit Grow Box Cabinets Bucket Bag Pc HydroponicGrowBro Co2 Generator Refill Kit Grow Box Cabinets Bucket Bag Pc Hydroponic $15.99
Inkbird Itc-306T Temperature Controller Heat Control Waterproof Sensor AquariumInkbird Itc-306T Temperature Controller Heat Control Waterproof Sensor Aquarium $27.99 Was:  Previous Price $39.99 Mw102 Ph & Temperature Meter W/Auto CalcMw102 Ph & Temperature Meter W/Auto Calc $114.00 Trending at $118.00
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Prices current as of last update, 05/26/20 6:57am.

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