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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3 pcs Lcd Digital Fish Aquarium Thermometer Water Black Free Extra Batteries3 pcs Lcd Digital Fish Aquarium Thermometer Water Black Free Extra Batteries $7.88 New listing
		Aquarium Floating Thermometer Suction Cup Temperature Monitor Safety IndicatorNew listing Aquarium Floating Thermometer Suction Cup Temperature Monitor Safety Indicator $2.86
Neptune Systems Apex Par Monitoring Kit (Pmk)Neptune Systems Apex Par Monitoring Kit (Pmk) $157.50 Neptune Systems Apex Vdm Led & Pump Control ModuleNeptune Systems Apex Vdm Led & Pump Control Module $30.00
Aquarium Thermometer, Risepro 2 pack Digital Water Thermometer For Fish Tank.Aquarium Thermometer, Risepro 2 pack Digital Water Thermometer For Fish Tank. $20.37 Dual Aquarium Fish Tank Thermometer Temperature Sticker Stick-on Fahrenheit °FDual Aquarium Fish Tank Thermometer Temperature Sticker Stick-on Fahrenheit °F $2.54
Neptune Systems Apex Pm1 Ph/Orp & Temp ModuleNeptune Systems Apex Pm1 Ph/Orp & Temp Module $9.95 Zilla 24/7 Digital Timer Power Center 11893, 1875-Watt, New, Free ShippingZilla 24/7 Digital Timer Power Center 11893, 1875-Watt, New, Free Shipping $24.38 List price: Previous Price $39.14
Neptune Systems Apex Pm2 Salinity ModuleNeptune Systems Apex Pm2 Salinity Module $9.95 Nyos Nitrate (No3) Reefer Test Kit - Aquarium Water TestingNyos Nitrate (No3) Reefer Test Kit - Aquarium Water Testing $24.99
Hanna Instruments Hi713 Phosphate Low Range CheckerHanna Instruments Hi713 Phosphate Low Range Checker $45.00 Hm Digital Dm-1 Inline Dual Tds Monitor Online Ro Di Water Filter ppm Meter 1/4"Hm Digital Dm-1 Inline Dual Tds Monitor Online Ro Di Water Filter ppm Meter 1/4" $27.95
1-1.070Sg Dual Scale Sea Water Salinity Refractometer Hydrometer for Aquarium1-1.070Sg Dual Scale Sea Water Salinity Refractometer Hydrometer for Aquarium $16.42 lcd digital aquarium thermometer fish tank marine temperaturelcd digital aquarium thermometer fish tank marine temperature $9.36
Jbj Ocean Pulse Quadra Wave Maker - 4 Pump Controller Regulator - H2O MotionJbj Ocean Pulse Quadra Wave Maker - 4 Pump Controller Regulator - H2O Motion $60.00 Pinpoint Orp Redox 400 Calibration FluidPinpoint Orp Redox 400 Calibration Fluid $4.99
Coralbox Powercell - Jebao/Jecod Battery Backup For Wave Pumps & Dc PumpsCoralbox Powercell - Jebao/Jecod Battery Backup For Wave Pumps & Dc Pumps $93.99 Neptune Apex System Complete KitNeptune Apex System Complete Kit $325.00
Neptune Apex Aquacontroller 3Neptune Apex Aquacontroller 3 $140.00 Premium Aquatek Co2 Regulator + Co2 Proof tubing + Bubble counter/check valvePremium Aquatek Co2 Regulator + Co2 Proof tubing + Bubble counter/check valve $74.99
2 pcs Lcd Digital Fish Aquarium Thermometer Water Terrarium Black Free Batteries2 pcs Lcd Digital Fish Aquarium Thermometer Water Terrarium Black Free Batteries $6.44 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
Neptune Systems Apex Atk Automatic Top-Off Kit Ato Auto CompleteNeptune Systems Apex Atk Automatic Top-Off Kit Ato Auto Complete $199.98 Owncons Lcd Digital Aquarium Thermometer Fish Tank Water Terrarium TemperatureOwncons Lcd Digital Aquarium Thermometer Fish Tank Water Terrarium Temperature $8.19
American Marine Pinpoint Orp Monitor Includes Probe & Calibration FluidsAmerican Marine Pinpoint Orp Monitor Includes Probe & Calibration Fluids $114.98 Neptune Systems Apex Classic Base Controller, Display Module, Temp Probe & Eb8Neptune Systems Apex Classic Base Controller, Display Module, Temp Probe & Eb8 $285.00
"New" Neptune System Aqua Controller Apex Lite w/ Temp & Lab Grade Ph Probes"New" Neptune System Aqua Controller Apex Lite w/ Temp & Lab Grade Ph Probes $350.00 Refractometer Calibration Solution - 60 Ml - Aquacraft 35 Ppt - 2ozRefractometer Calibration Solution - 60 Ml - Aquacraft 35 Ppt - 2oz $11.49
6262 water temperature gauge - black6262 water temperature gauge - black $38.22 3X Aquarium Lcd Digital Fish Thermometer Water Terrarium Black Free Batteries3X Aquarium Lcd Digital Fish Thermometer Water Terrarium Black Free Batteries $7.65
Mini Digital Lcd Thermometer Hygrometer Humidity Temperature +CableMini Digital Lcd Thermometer Hygrometer Humidity Temperature +Cable $5.21 Was: Previous Price $5.48 Hikari Accuprobe Aquarium Hydrometer, Self Leveling, Hanging device includedHikari Accuprobe Aquarium Hydrometer, Self Leveling, Hanging device included $10.49
Coralife Deep Six Hydrometer Salinity Test Specific Gravity Meter Free Usa ShipCoralife Deep Six Hydrometer Salinity Test Specific Gravity Meter Free Usa Ship $11.95 Was: Previous Price $15.93 Tunze Osmolator Universal 3155 Marine Aquarium Auto Top-Off System Water LevelTunze Osmolator Universal 3155 Marine Aquarium Auto Top-Off System Water Level $140.00
ReefKeeper Lite Controller with Temperature Probe - Digital AquaticsReefKeeper Lite Controller with Temperature Probe - Digital Aquatics $134.99 Marina Floating Thermometer with Suction Cup, NewMarina Floating Thermometer with Suction Cup, New $2.48 Trending at $2.77
Zacro Lcd Digital Aquarium Thermometer Fish Tank Water Terrarium TemperatureZacro Lcd Digital Aquarium Thermometer Fish Tank Water Terrarium Temperature $29.77 Hagen Marina Stainless Steel Thermometer Fish Aquarium Celsius & FahrenheitHagen Marina Stainless Steel Thermometer Fish Aquarium Celsius & Fahrenheit $6.89
Dosing Pump Bracket for Mcd-3-m Bm To1 To2 Jebao Dp-4 Dosing Pump Acrylic MadeDosing Pump Bracket for Mcd-3-m Bm To1 To2 Jebao Dp-4 Dosing Pump Acrylic Made $22.89 Autoaqua Smart Ato Micro - Automatic Top Off System Magnetic Full Kit W/PumpAutoaqua Smart Ato Micro - Automatic Top Off System Magnetic Full Kit W/Pump $124.99
Tsunami At-1 Auto Top-Off System AtoTsunami At-1 Auto Top-Off System Ato $59.99 Aquatek Premium Brass Check ValveAquatek Premium Brass Check Valve $11.99
Lifegard Aquatics Led Digital Thermometer for AquariumsLifegard Aquatics Led Digital Thermometer for Aquariums $25.08 Salinity Refractometer Seawater & Aquarium - Dual Scale (1.0 to 1.070 S.G.)Salinity Refractometer Seawater & Aquarium - Dual Scale (1.0 to 1.070 S.G.) $12.59
Seneye Reef MonitorSeneye Reef Monitor $199.00 New Tiny Seas Digital Lcd Aquarium Temperature Thermometer Free Extra BatteryNew Tiny Seas Digital Lcd Aquarium Temperature Thermometer Free Extra Battery $4.15
Neptune Systems Aquacontroller Apex I/O Breakout Box Break OutNeptune Systems Aquacontroller Apex I/O Breakout Box Break Out $44.93 1-1.07Sg Atc Salt Sea Water Tester Salinity Refractometer Aquarium Hydrometer1-1.07Sg Atc Salt Sea Water Tester Salinity Refractometer Aquarium Hydrometer $16.45
Neptune Systems Apex Jr AquaController Aquarium (Display, Base Unit, Temp Probe)Neptune Systems Apex Jr AquaController Aquarium (Display, Base Unit, Temp Probe) $239.95 New listing
		2 in1 Digital Salinity & Ph MeterNew listing 2 in1 Digital Salinity & Ph Meter $40.00
Seawater 35 Ppt Refractometer Salt Calibration Solution - 60 Ml - Aquarium ReefSeawater 35 Ppt Refractometer Salt Calibration Solution - 60 Ml - Aquarium Reef $11.99 Milwaukee Ma911B/2 pH Electrode Probe works with Sms120/Sms122/Sms125Milwaukee Ma911B/2 pH Electrode Probe works with Sms120/Sms122/Sms125 $34.99 Trending at $35.96
Neptune Systems 1" Flow Sensor Fs-100 with Adapters for Aquarium NewNeptune Systems 1" Flow Sensor Fs-100 with Adapters for Aquarium New $59.95 Mw600 Milwaukee: Dissolved Oxygen Smart Meter Do Orp Dissolved Oxygen w/ ProbeMw600 Milwaukee: Dissolved Oxygen Smart Meter Do Orp Dissolved Oxygen w/ Probe $159.99
Ghl Proflux Expantion SocketGhl Proflux Expantion Socket $65.00 Custom Ecotech Reeflink MountCustom Ecotech Reeflink Mount $10.00
Neptune Systems Pmk Par Monitoring KitNeptune Systems Pmk Par Monitoring Kit $235.00 Deep Blue Aquarium Professional Accurate High Performance Suction ThermometerDeep Blue Aquarium Professional Accurate High Performance Suction Thermometer $6.47
Reefkeeper-Alc-Advanced Lighting Control Module- Digital Aquatics-aqua Illum IntReefkeeper-Alc-Advanced Lighting Control Module- Digital Aquatics-aqua Illum Int $79.95 Jbj Truetemp - Aquarium Heater Replacement Temperature Probe And WireJbj Truetemp - Aquarium Heater Replacement Temperature Probe And Wire $29.99
Milwaukee Mp810 pH Dosing pump, Peristaltic Chemical Feeder, 3.8 Gpd, 115VMilwaukee Mp810 pH Dosing pump, Peristaltic Chemical Feeder, 3.8 Gpd, 115V $81.96 Milwaukee- Mc122 Ph Controller With Mounting Kit And Probe Holder Co2 DosingMilwaukee- Mc122 Ph Controller With Mounting Kit And Probe Holder Co2 Dosing $119.95
2 Tiny Seas Digital Lcd Aquarium Temperature Thermometer 2 Free Extra Batteries2 Tiny Seas Digital Lcd Aquarium Temperature Thermometer 2 Free Extra Batteries $6.45 pH Calibration Fluid/Solution 7.0 & 10.0 Pinpoint Calibrate Monitor Probe 3ea.pH Calibration Fluid/Solution 7.0 & 10.0 Pinpoint Calibrate Monitor Probe 3ea. $11.97
Atc Refractometer Atc Refractometer  $10.00 Current Usa Wireless Remote For Ramp Timer Pro. *Free Shipping*Current Usa Wireless Remote For Ramp Timer Pro. *Free Shipping* $12.64 Trending at $13.47
Milwaukee Ma911B/2 pH Electrode/Probe/Sensor, Bnc, 2 Meter, Ma911/Mc120/Mc122Milwaukee Ma911B/2 pH Electrode/Probe/Sensor, Bnc, 2 Meter, Ma911/Mc120/Mc122 $35.96 Standard Seawater 35 ppt Refractometer Calibration Solution - 60 mlStandard Seawater 35 ppt Refractometer Calibration Solution - 60 ml $14.34 List price: Previous Price $16.99
Eheim Jager Aquarium Heater Fully Submersible! (Pick Your Size) 25W To 300WEheim Jager Aquarium Heater Fully Submersible! (Pick Your Size) 25W To 300W $22.99 to $29.99 Hanna Ph Tester/Checker Plus #H198100Hanna Ph Tester/Checker Plus #H198100 $38.99
Aquatek SplitPro Co2 Splitter for Solenoid Regulator (3 Way)Aquatek SplitPro Co2 Splitter for Solenoid Regulator (3 Way) $42.99 New listing
		Neptune Apex Energy Bar Eb832 never used but out of box.New listing Neptune Apex Energy Bar Eb832 never used but out of box. $132.50
AutoTopoff Double - Water Level Controller for Reef Aquarium - Auto Top Off AtoAutoTopoff Double - Water Level Controller for Reef Aquarium - Auto Top Off Ato *No Box* American Marine Pinpoint pH Probe*No Box* American Marine Pinpoint pH Probe $29.99
Up inline Co2 Atomizer system diffuser calcium reactor 12/16mm 1/2' ship UsaUp inline Co2 Atomizer system diffuser calcium reactor 12/16mm 1/2' ship Usa $25.99 Innovative Marine HydroFill Ti – Ato Controller Aquarium Automatic Top Off 7503Innovative Marine HydroFill Ti – Ato Controller Aquarium Automatic Top Off 7503 See details... $70.00
5x New Glass Meter Fish Tank Water Temperature Aquarium Thermometer Suction S4W15x New Glass Meter Fish Tank Water Temperature Aquarium Thermometer Suction S4W1 $5.69 Milwaukee Mc122 pH Controller w/probeMilwaukee Mc122 pH Controller w/probe $119.95
Delay Timer for Protein Skimmers - Reef Octopus - Prevent Skimmer OverflowsDelay Timer for Protein Skimmers - Reef Octopus - Prevent Skimmer Overflows $49.99 New Fish Tank Aquarium Thermometer Temperature °F Fahrenheit Sticker Stick-OnNew Fish Tank Aquarium Thermometer Temperature °F Fahrenheit Sticker Stick-On $1.32 Was: Previous Price $1.39
New listing
		Seneye Reef Monitor - Fast Free Shipping EverydayNew listing Seneye Reef Monitor - Fast Free Shipping Everyday $199.00 Digital Lcd Thermometer for Aquarium Fish Tank Vivarium Reptile TerrariumDigital Lcd Thermometer for Aquarium Fish Tank Vivarium Reptile Terrarium $5.04 Was: Previous Price $5.36
Salinity Refractometer, Aquarium & Seawater - Dual Scale (1.0 to 
00004000
1.070 S.G.)Salinity Refractometer, Aquarium & Seawater - Dual Scale (1.0 to 00004000 1.070 S.G.) $18.99 New listing
		Vertex Orp Redox ProbeNew listing Vertex Orp Redox Probe $39.99
Digital Lcd Thermometer Temperature For Home Brew Brewing Wine Beer SpiritsDigital Lcd Thermometer Temperature For Home Brew Brewing Wine Beer Spirits $8.06 ReefKeeper Lite Plus Aquarium Controller Temp & Ph - Digital AquaticsReefKeeper Lite Plus Aquarium Controller Temp & Ph - Digital Aquatics $279.99
Neptune Systems Apex Wxm Wireless Vortech Pump Control ModuleNeptune Systems Apex Wxm Wireless Vortech Pump Control Module $12.50 Neptune Systems Apex - Eb832 Temperature Probe Salinity Lab Grade Ph OrpNeptune Systems Apex - Eb832 Temperature Probe Salinity Lab Grade Ph Orp $799.95
New listing
		Vertex pH Probe - Brand New Closeout Sale, reg 49.99New listing Vertex pH Probe - Brand New Closeout Sale, reg 49.99 $24.99 Seneye Slide Ammonia & pH(6.5-9) 3pkSeneye Slide Ammonia & pH(6.5-9) 3pk $36.99
Hanna Instruments Low Range Phosphate Checker Hi713Hanna Instruments Low Range Phosphate Checker Hi713 $1.04 ReefKeeper Lite Plus with ExtrasReefKeeper Lite Plus with Extras $102.50
Octopus Ph-200 MonitorOctopus Ph-200 Monitor $20.00 Aquarium Floating Thermometer Suction Cup Proper Temperature Safe Zone IndicatorAquarium Floating Thermometer Suction Cup Proper Temperature Safe Zone Indicator $2.82
Lcd Digital Fish Aquarium Thermometer Water Terrarium Black Free Extra BatteriesLcd Digital Fish Aquarium Thermometer Water Terrarium Black Free Extra Batteries $4.57 Digital Aquatics Reefkeeper Rkm-MlcDigital Aquatics Reefkeeper Rkm-Mlc $45.00
Ice Cap Reef-Cam Underwater Micro Hd Camera For Aquariums - Iphone/AndroidIce Cap Reef-Cam Underwater Micro Hd Camera For Aquariums - Iphone/Android $199.99 W6 5x Glass Meter Fish Tank Water Temperature Aquarium Thermometer Suction CupW6 5x Glass Meter Fish Tank Water Temperature Aquarium Thermometer Suction Cup $5.61
Neptune Systems Apex Aqua Controller Plus Extras!Neptune Systems Apex Aqua Controller Plus Extras! $490.00 Milwaukee Instruments Ph600Aq Ph Tester With 1 Point Manual CalibrationMilwaukee Instruments Ph600Aq Ph Tester With 1 Point Manual Calibration $19.95
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Prices current as of last update, 12/13/17 12:56am.

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