Temperature Control

Items 49 to 96 of 103 total

Each species of fish has specific needs when it comes to temperature. For fish keepers, getting the right aquarium temperature is a breeze when you use one of these reliable temperature control products from Big Al’s Pets. Each one is designed to take the guesswork out of temperature regulation in your aquarium. You’ll be able to quickly and easily create settings for how warm or cool your fishes’ water needs to be. We carry the latest precision devices to provide you with more control over your aquarium water temperature while also helping to maintain optimal living conditions for your fish.

Our selection of aquarium temperature control products includes a number of devices that any fish keeper may need for their aquarium. Our thermometers provide you with accurate readings, while our heaters and chillers make sure that your water temperature is maintained with accuracy and stability. We also carry helpful accessories for setting up your aquarium temperature control devices, including magnetic suction cups and brackets. At Big Al’s Pets, you can get everything you need for your aquarium with a convenient, one-stop shopping experience.
  • Hydor Theo Submersible Heater - 150 W
    THEO aquarium heater has all the necessary features for safe and precise temperature maintance of the water in your tank. The exclusive technology and the high quality of the components guarantee a long lasting product.

    Regular Price: USD 34.99

    Sale Price USD 23.99

    Regular Price: USD 34.99

    Sale Price USD 23.99

  • Hydor Theo Submersible Heater - 200 W
    THEO aquarium heater has all the necessary features for safe and precise temperature maintance of the water in your tank. The exclusive technology and the high quality of the components guarantee a long lasting product.

    Regular Price: USD 36.99

    Sale Price USD 24.99

    Regular Price: USD 36.99

    Sale Price USD 24.99

  • Hydor Theo Submersible Heater - 300 W
    THEO aquarium heater has all the necessary features for safe and precise temperature maintance of the water in your tank. The exclusive technology and the high quality of the components guarantee a long lasting product.

    Regular Price: USD 39.99

    Sale Price USD 29.89

    Regular Price: USD 39.99

    Sale Price USD 29.89

  • Hydor Theo Submersible Heater - 400 W
    THEO aquarium heater has all the necessary features for safe and precise temperature maintance of the water in your tank. The exclusive technology and the high quality of the components guarantee a long lasting product.

    Regular Price: USD 42.99

    Sale Price USD 29.99

    Regular Price: USD 42.99

    Sale Price USD 29.99

  • Lee's Heater Holders - 2 pk
    The Heater Holder features a clip with a suction cup that is to be used to secure 1" heater tubing to the wall of the aquarium. The Heater Holder can also be used to secure 1" siphon or uplift tubes.

    Regular Price: USD 2.99

    Sale Price USD 1.31

    Regular Price: USD 2.99

    Sale Price USD 1.31

  • Penn Plax Heater Holder Suction Cups - 2 pk
    Heaters Holders & Guards. Penn Plax Suction Cup Heater Holder for standard sized glass aquarium heaters.

    Regular Price: USD 3.99

    Sale Price USD 1.99

    Regular Price: USD 3.99

    Sale Price USD 1.99

  • Penn Plax Standing Thermometer
    • Penn Plax offers a variety of different styles of Aquarium Thermometers. Aquarium Thermometers are an important component for every aquarium set-up. The provide clear, accurate live temperature readings of your aquarium water's temperature, allowing the aquarium hobbyist to fine tune their heating system to provide the appropriate water temperature for their fish. Economical sinking Thermometer.

    Regular Price: USD 3.99

    Sale Price USD 1.79

    Regular Price: USD 3.99

    Sale Price USD 1.79

  • Penn Plax Stainless Steel Thermometer
    • Penn Plax offers a variety of different styles of Aquarium Thermometers. Aquarium Thermometers are an important component for every aquarium set-up. The provide clear, accurate live temperature readings of your aquarium water's temperature, allowing the aquarium hobbyist to fine tune their heating system to provide the appropriate water temperature for their fish. Stainless Steel Thermometer can be hung from trim of aquarium for your convenience.

    Regular Price: USD 2.99

    Sale Price USD 1.99

    Regular Price: USD 2.99

    Sale Price USD 1.99

  • Tom Aquatics Temp Alert Digital Thermometer - Fahrenheit
    The Tom Aquarium Temp Alert Thermometers display both aquarium water temperature and room temperature simultaneously. They features 4 programmable alerts, with both audible and LED alarms. Suitable for both freshwater and saltwater applications.

    Regular Price: USD 24.99

    Sale Price USD 17.99

    Regular Price: USD 24.99

    Sale Price USD 17.99

    Out of stock

  • Hydor ETH 201 In-Line Heater - 5/8" - 200 W
    The self-limiting PTC heating element guarantees maximum safety against any risk of overheating. The exclusive technology and the high quality of the components guarantee a long lasting product.

    Regular Price: USD 89.99

    Sale Price USD 68.89

    Regular Price: USD 89.99

    Sale Price USD 68.89

  • Hydor ETH 200 In-Line Heater - 1/2" - 200 W
    The self-limiting PTC heating element guarantees maximum safety against any risk of overheating. The exclusive technology and the high quality of the components guarantee a long lasting product.

    Regular Price: USD 74.99

    Sale Price USD 59.99

    Regular Price: USD 74.99

    Sale Price USD 59.99

  • Marina Suction Cups for Thermometers/Airline Tubing - Small - 2 pk
    Marina Small Thermometer Suction Cups can be used for securing thermometers and airline tubing within your aquarium environment.

    Regular Price: USD 3.99

    Sale Price USD 1.22

    Regular Price: USD 3.99

    Sale Price USD 1.22

  • Eheim Jager TruTemp Submersible Heater - 50 W
    • Features a shatterproof glass construction
    • TruTemp dial adjusts from 18° to 34° C (65° to 93° F)
    • Thermo safety control enables "running dry" protection
    • On/off indicator light verifies heater functions
    • Includes mounting bracket and suction cups

    Regular Price: USD 24.99

    Sale Price USD 18.49

    Regular Price: USD 24.99

    Sale Price USD 18.49

  • Eheim Jager TruTemp Submersible Heater - 100 W
    • Features a shatterproof glass construction
    • TruTemp dial adjusts from 18° to 34° C (65° to 93° F)
    • Thermo safety control enables "running dry" protection
    • On/off indicator light verifies heater functions
    • Includes mounting bracket and suction cups

    Regular Price: USD 29.99

    Sale Price USD 19.99

    Regular Price: USD 29.99

    Sale Price USD 19.99

  • Eheim Jager TruTemp Submersible Heater - 150 W
    • Features a shatterproof glass construction
    • TruTemp dial adjusts from 18° to 34° C (65° to 93° F)
    • Thermo safety control enables "running dry" protection
    • On/off indicator light verifies heater functions
    • Includes mounting bracket and suction cups

    Regular Price: USD 29.99

    Sale Price USD 21.99

    Regular Price: USD 29.99

    Sale Price USD 21.99

  • Eheim Jager TruTemp Submersible Heater - 200 W
    • Features a shatterproof glass construction
    • TruTemp dial adjusts from 18° to 34° C (65° to 93° F)
    • Thermo safety control enables "running dry" protection
    • On/off indicator light verifies heater functions
    • Includes mounting bracket and suction cups

    Regular Price: USD 32.99

    Sale Price USD 24.99

    Regular Price: USD 32.99

    Sale Price USD 24.99

  • Eheim Jager TruTemp Submersible Heater - 250 W
    • Features a shatterproof glass construction
    • TruTemp dial adjusts from 18° to 34° C (65° to 93° F)
    • Thermo safety control enables "running dry" protection
    • On/off indicator light verifies heater functions
    • Includes mounting bracket and suction cups

    Regular Price: USD 34.99

    Sale Price USD 25.99

    Regular Price: USD 34.99

    Sale Price USD 25.99

  • Eheim Jager TruTemp Submersible Heater - 300 W
    • Features a shatterproof glass construction
    • TruTemp dial adjusts from 18° to 34° C (65° to 93° F)
    • Thermo safety control enables "running dry" protection
    • On/off indicator light verifies heater functions
    • Includes mounting bracket and suction cups

    Regular Price: USD 34.99

    Sale Price USD 23.99

    Regular Price: USD 34.99

    Sale Price USD 23.99

    Out of stock

  • Eheim Jager Heater Double Suction Holder
    Replacement Heater Holder for all Eheim Jager Heaters, complete with rubber suction cups. The heater holder holds the heater away from the aquarium glass allowing for water circulation over the entire unit.

    Regular Price: USD 5.99

    Sale Price USD 3.49

    Regular Price: USD 5.99

    Sale Price USD 3.49

  • Coralife Battery Operated Digital Thermometer
    • Bring home your easy-to-read, clear display thermometer
    • It is designed to work with standard terrariums & aquariums
    • Temperature ranges from -10 to +140 degrees Fahrenheit
    • This thermometer will read in both Fahrenheit and Celsius
    • The battery, suction cup and probe cord are all included

    Regular Price: USD 13.99

    Sale Price USD 6.99

    Regular Price: USD 13.99

    Sale Price USD 6.99

  • Fluval E Advanced Electronic Heater - 100 W
    The most technologically advanced heaters available, the Fluval E series advanced electronic aquarium heater with VueTech technology delivers piece of mind by continuously displaying real-time water temperature.With an advanced digital microprocessor.
    USD 52.99
    USD 52.99

    Out of stock

  • Fluval E Advanced Electronic Heater - 200 W
    The most technologically advanced heaters available, the Fluval E series advanced electronic aquarium heater with VueTech technology delivers piece of mind by continuously displaying real-time water temperature.With an advanced digital microprocessor.
    USD 53.99
    USD 53.99

    Out of stock

  • Fluval E Advanced Electronic Heater - 300 W
    The most technologically advanced heaters available, the Fluval E series advanced electronic aquarium heater with VueTech technology delivers piece of mind by continuously displaying real-time water temperature.With an advanced digital microprocessor.
    USD 55.99
    USD 55.99

    Out of stock

  • Marina Suction Cups for Heaters (up to 3/4" dia.) - 2 pk
    Marina Suction Cups are designed to hold heaters measuring up to 3/4" in diameter. Powerful, long-lasting suction keeps your heater securely in place.

    Regular Price: USD 2.99

    Sale Price USD 1.49

    Regular Price: USD 2.99

    Sale Price USD 1.49

  • Hagen Heater Holder/Hose Bracket
    Plastic Heater Holder for Thermal Compact / Thermal Pre-set. Also for Fluval 104 and 204

    Regular Price: USD 6.99

    Sale Price USD 3.99

    Regular Price: USD 6.99

    Sale Price USD 3.99

    Out of stock

  • Underwater Treasures Digital Thermometer
    • Displays temperatures in both Fahrenheit & Celsius
    • Gives an accurate and easy-to-read green indicator
    • This Thermometer ranges from 18-34°C & 64-93°F

    Regular Price: USD 3.99

    Sale Price USD 1.99

    Regular Price: USD 3.99

    Sale Price USD 1.99

  • Underwater Treasures Easy Read Thermometer
    • Designed for use inside of your aquarium
    • Provides you with a secure suction cup mount
    • Battery operated, compact & submersible
    • Provides constant, accurate readings to ±1°F
    • The solid plastic casing helps prevent breakage

    Regular Price: USD 5.99

    Sale Price USD 3.99

    Regular Price: USD 5.99

    Sale Price USD 3.99

  • Cobalt Aquatics Accu-Therm Heater - 250 W
    • Advanced, fully submersible heater
    • Equally capable in freshwater and saltwater environments
    • Computer-tested accurate to ± 2 ° Fahrenheit
    • Features an easily calibrated thermostat and Triac circuit
    • Ceramic radiator delivers even heat distribution
    USD 33.17
    USD 33.17
  • Cobalt Aquatics Accu-Therm Heater - 300 W
    • Advanced, fully submersible heater
    • Equally capable in freshwater and saltwater environments
    • Computer-tested accurate to ± 2 ° Fahrenheit
    • Features an easily calibrated thermostat and Triac circuit
    • Ceramic radiator delivers even heat distribution
    USD 33.75
    USD 33.75
  • Cobalt Aquatics Mini-Therm Heater - 5 W
    • Compact, fully submersible heater for small aquariums
    • Equally capable in freshwater and saltwater environments
    • Constant operation eliminates the need for adjustments
    • Ceramic radiator delivers even heat distribution
    • Shatterproof polymer casing protects aquarium and heater
    USD 13.94
    USD 13.94

    Out of stock

  • Cobalt Aquatics Mini-Therm Heater - 10 W
    • Compact, fully submersible heater for small aquariums
    • Equally capable in freshwater and saltwater environments
    • Constant operation eliminates the need for adjustments
    • Ceramic radiator delivers even heat distribution
    • Shatterproof polymer casing protects aquarium and heater
    USD 14.17
    USD 14.17

    Out of stock

  • Cobalt Aquatics Mini-Therm Heater - 20 W
    • Compact, fully submersible heater for small aquariums
    • Equally capable in freshwater and saltwater environments
    • Constant operation eliminates the need for adjustments
    • Ceramic radiator delivers even heat distribution
    • Shatterproof polymer casing protects aquarium and heater
    USD 21.20
    USD 21.20
  • Zoo Med Mag-Clip Magnetic Suction Cups
    • Industrial strength magnetic suction cup system
    • Includes 6 assorted sizes of nylon clips
    • Ideal for holding heaters, airline tubing, spray bars, etc.
    • Never replace your suction cups again!

    Regular Price: USD 9.99

    Sale Price USD 6.99

    Regular Price: USD 9.99

    Sale Price USD 6.99

  • Ista Mini Thermometer
    • Perfect for use in any nano or small aquariums
    • Use to spot-check temperature when needed
    • Affix to glass or acrylic with included suction cup
    • Measures up to 50 ° Celsius (122° Fahrenheit)
    USD 2.99
    USD 2.99
  • Hydor ETH In-Line Heaters
    The self-limiting PTC heating element guarantees maximum safety against any risk of overheating. The exclusive technology and the high quality of the components guarantee a long lasting product.

    Price From: USD 59.99

    Price From: USD 59.99

  • Tom Aquatics Aquarium Digital Temperature Alert Thermometers
    The Tom Aquarium Temp Alert Thermometers display both aquarium water temperature and room temperature simultaneously. They features 4 programmable alerts, with both audible and LED alarms. Suitable for both freshwater and saltwater applications.

    Price From: USD 17.99

    Price From: USD 17.99

    Out of stock

  • Coralife Aquarium Chillers
    • Provides accurate temperature control with quality construction
    • Keeps water within +/- 2 degrees F of set temperature
    • Titanium heat exchanger will not corrode over time
    • Easy to use, programmable LED display
    • Includes 1 year limited manufacturer's warranty

    Price From: USD 449.99

    Price From: USD 449.99

  • Hydor Theo Submersible Heater
    THEO aquarium heater has all the necessary features for safe and precise temperature maintance of the water in your tank. The exclusive technology and the high quality of the components guarantee a long lasting product.

    Price From: USD 21.99

    Price From: USD 21.99

  • Cobalt Aquatics Accu-Therm Heater - 200 W
    • Advanced, fully submersible heater
    • Equally capable in freshwater and saltwater environments
    • Computer-tested accurate to ± 2 ° Fahrenheit
    • Features an easily calibrated thermostat and Triac circuit
    • Ceramic radiator delivers even heat distribution
    USD 31.36
    USD 31.36
  • Cobalt Aquatics Accu-Therm Heater - 150 W
    • Advanced, fully submersible heater
    • Equally capable in freshwater and saltwater environments
    • Computer-tested accurate to ± 2 ° Fahrenheit
    • Features an easily calibrated thermostat and Triac circuit
    • Ceramic radiator delivers even heat distribution
    USD 30.50
    USD 30.50
  • Cobalt Aquatics Accu-Therm Heater - 100 W
    • Advanced, fully submersible heater
    • Equally capable in freshwater and saltwater environments
    • Computer-tested accurate to ± 2 ° Fahrenheit
    • Features an easily calibrated thermostat and Triac circuit
    • Ceramic radiator delivers even heat distribution
    USD 28.48
    USD 28.48
  • Underwater Treasures Floating Glass Thermometer
    Floating Glass Thermometer is accurate and easy to read. It displays temperature in both °C and °F, and is great for freshwater and marine systems. This fully submersible thermometer can be secured with included suction cup or can float freely.

    Regular Price: USD 3.99

    Sale Price USD 1.99

    Regular Price: USD 3.99

    Sale Price USD 1.99

  • Zoo Med Bettatherm Mini Size Betta Bowl Heater - 7.5 W
    The Bettatherm Mini Size Betta Bowl Heater is a convenient small, round-size heater that fits most fish or Betta bowls. This fully-submersible heater can be buried under gravel to increase the water temperature 5-10° over ambient room temperature.
    USD 12.99
    USD 12.99

    Out of stock

  • Aqueon Mini Heater - 10 W
    The Aqueon 10 W Mini Heater is the perfect size heater for desktop aquariums up to 5 gallons in size. A perfect match for the MiniBows! This cUL approved fully submersible heater is shatterproof and features a thermal safety shut-off.

    Regular Price: USD 15.99

    Sale Price USD 9.99

    Regular Price: USD 15.99

    Sale Price USD 9.99

  • Coralife Aquarium Chiller - 1/10 HP
    • Provides accurate temperature control with quality construction
    • Keeps water within +/- 2 degrees F of set temperature
    • Titanium heat exchanger will not corrode over time
    • Easy to use, programmable LED display
    • Includes 1 year limited manufacturer's warranty

    Regular Price: USD 499.99

    Sale Price USD 449.99

    Regular Price: USD 499.99

    Sale Price USD 449.99

    Out of stock

  • Coralife Aquarium Chiller - 1/2 HP
    • Provides accurate temperature control with quality construction
    • Keeps water within +/- 2 degrees F of set temperature
    • Titanium heat exchanger will not corrode over time
    • Easy to use, programmable LED display
    • Includes 1 year limited manufacturer's warranty
    USD 1,099.99
    USD 1,099.99

    Out of stock

  • Coralife Aquarium Chiller - 1 HP
    • Provides accurate temperature control with quality construction
    • Keeps water within +/- 2 degrees F of set temperature
    • Titanium heat exchanger will not corrode over time
    • Easy to use, programmable LED display
    • Includes 1 year limited manufacturer's warranty

    Regular Price: USD 1,599.99

    Sale Price USD 1,499.99

    Regular Price: USD 1,599.99

    Sale Price USD 1,499.99

  • Zoo Med Aqua Cool Aquarium Cooling Fan
    • A very affordable alternative to expensive chillers
    • Dissipates radiant heat generated by aquarium lamps
    • Reduces water temperature through evaporative cooling
    • Features a wide, multi-directional discharge nozzle
    • Includes low voltage, energy efficient power source

    Regular Price: USD 27.99

    Sale Price USD 20.49

    Regular Price: USD 27.99

    Sale Price USD 20.49