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Temperature Control

Items 1 to 48 of 114 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.
  • 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 21.99
    USD 21.99
  • Aqueon Submersible Aquarium Heaters
    Aqueon Submersible Heaters are accurate, reliable, durable and easy to use. Each unit is calibrated twice to ensure accuracy within +/- 1degrees F. Made from thermal shatter-resistant glass designed to absorb impacts.

    Price From: USD 18.99

    Price From: USD 18.99

  • Cobalt Aquatics Neo-Therm Heaters
    • Modern, super flat design
    • Easy to set "one touch" system
    • Accurate electronic thermostat (±0.5 degrees F)
    • LEDs display set and actual temperature
    • Shatterproof outer casing protects electrical components

    Price From: USD 56.99

    Price From: USD 56.99

  • Cobalt Aquatics Accu-Therm Heaters
    • 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

    Price From: USD 25.99

    Price From: USD 25.99

  • Cobalt Aquatics Mini-Therm Heaters
    • 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

    Price From: USD 13.99

    Price From: USD 13.99

  • Aqueon Pro Submersible Heaters
    Aqueon Pro Heaters are accurate, reliable, durable, and easy to use. They are constructed using a shatterproof and nearly indestructible outer shell, and feature a durable aluminum core for strength and even heat distribution. Fully submersible.

    Price From: USD 26.99

    Price From: USD 26.99

  • Marineland Precision Submersible Heaters
    • Powerful submersible heater for aquariums up to 12 gallons
    • Equally capable in both freshwater and saltwater aquariums
    • Advanced heating element provides even heat distribution
    • Thermal safety switch automatically prevents heater failure
    • cUL Listed and backed by a class-leading lifetime warranty!

    Price From: USD 18.99

    Price From: USD 18.99

  • Eheim Jager TruTemp Submersible Heaters
    An ultra-modern thermal device using the best available technology. The temperature can be precisely adjusted from 18-34°C and readjusted if required. The control accuracy is +/- 0.5 degrees F, and the heat is controlled to a constant temperature.

    Price From: USD 17.99

    Price From: USD 17.99

  • 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 7.99

    Sale Price USD 6.49

    Regular Price: USD 7.99

    Sale Price USD 6.49

  • Tetra Submersible Heater - HT-40 - 150 W
    • Submersible glass heater for aquariums 30 to 40 gallons in size
    • Electronic thermostat maintains a constant 78±2° F (25±1° C)
    • LED indicator enables visual confirmation of heater operation
    • Convenient suction cup mount makes installation a breeze
    • Features a heat and shock-resistant borosilicate glass housing

    Regular Price: USD 22.99

    Sale Price USD 16.99

    Regular Price: USD 22.99

    Sale Price USD 16.99

  • Marineland Precision Submersible Heater - 100 W
    • Powerful submersible heater for aquariums up to 29 gallons
    • Equally capable in both freshwater and saltwater aquariums
    • Advanced heating element provides even heat distribution
    • Thermal safety switch automatically prevents heater failure
    • cUL Listed and backed by a class-leading lifetime warranty!

    Regular Price: USD 23.99

    Sale Price USD 19.99

    Regular Price: USD 23.99

    Sale Price USD 19.99

    Out of stock

  • Marineland Precision Submersible Heater - 200 W
    • Powerful submersible heater for aquariums up to 55 gallons
    • Equally capable in both freshwater and saltwater aquariums
    • Advanced heating element provides even heat distribution
    • Thermal safety switch automatically prevents heater failure
    • cUL Listed and backed by a class-leading lifetime warranty!

    Regular Price: USD 25.99

    Sale Price USD 21.99

    Regular Price: USD 25.99

    Sale Price USD 21.99

  • Marineland Precision Submersible Heater - 300 W
    • Powerful submersible heater for aquariums up to 80 gallons
    • Equally capable in both freshwater and saltwater aquariums
    • Advanced heating element provides even heat distribution
    • Thermal safety switch automatically prevents heater failure
    • cUL Listed and backed by a class-leading lifetime warranty!

    Regular Price: USD 28.99

    Sale Price USD 24.99

    Regular Price: USD 28.99

    Sale Price USD 24.99

  • Marineland Precision Submersible Heater - 400 W
    • Powerful submersible heater for aquariums up to 125 gallons
    • Equally capable in both freshwater and saltwater aquariums
    • Advanced heating element provides even heat distribution
    • Thermal safety switch automatically prevents heater failure
    • cUL Listed and backed by a class-leading lifetime warranty!

    Regular Price: USD 46.99

    Sale Price USD 39.99

    Regular Price: USD 46.99

    Sale Price USD 39.99

  • Chill Solutions Thermoelectric Aquarium Chiller - CSXC-1
    • Accurate, active cooling for aquariums up to 30 gallons
    • Uses thermoelectric technology to cool without refrigerants
    • Incredibly compact, quiet, reliable, and easy to use!
    • Features a fully proportional thermostat (45°F - 90°F)
    • Ideal for nano reef aquariums, cold water aquariums, etc.

    Regular Price: USD 239.99

    Sale Price USD 209.99

    Regular Price: USD 239.99

    Sale Price USD 209.99

    Out of stock

  • Hydor Slim Heater for Micro Tanks & Mini Aquariums - 15 W
    • For aquariums with fish similar to Bettas or Guppies
    • Used on glass or acrylic miniature aquariums
    • Suitable to use in a 5 or 10 gallon aquarium

    Regular Price: USD 10.99

    Sale Price USD 7.99

    Regular Price: USD 10.99

    Sale Price USD 7.99

  • 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 49.99

    Price From: USD 49.99

  • Tetra HT Submersible Heaters
    • Submersible glass heater for aquariums 40 to 55 gallons in size
    • Electronic thermostat maintains a constant 78±2° F (25±1° C)
    • LED indicator enables visual confirmation of heater operation
    • Convenient suction cup mount makes installation a breeze
    • Features a heat and shock-resistant borosilicate glass housing

    Price From: USD 8.99

    Price From: USD 8.99

  • 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

  • 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 429.99

    Price From: USD 429.99

  • Hydor Slim Heaters for Micro Tanks & Mini Aquariums
    • For aquariums with fish similar to Bettas or Guppies
    • Used on glass or acrylic miniature aquariums
    • Suitable to use in a 2 or 5 gallon aquarium

    Price From: USD 7.99

    Price From: USD 7.99

  • 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 16.99

    Price From: USD 16.99

  • Penn Plax Therma-Temp Thermometers
    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.

    Price From: USD 1.79

    Price From: USD 1.79

  • EcoPlus Water Chiller - 1/2 HP
    • Suitable for fresh or saltwater aquariums and much more
    • Equipped with a high performance titanium heat exchanger
    • Durable and efficient compressor for added dependability
    • Includes a micro computer with built in digital LCD display
    • Energy efficient design keeps your power bill in control

    Regular Price: USD 706.99

    Sale Price USD 599.99

    Regular Price: USD 706.99

    Sale Price USD 599.99

  • EcoPlus Water Chiller - 1/10 HP
    • Suitable for fresh or saltwater aquariums and much more
    • Equipped with a high performance titanium heat exchanger
    • Durable and efficient compressor for added dependability
    • Includes a micro computer with built in digital LCD display
    • Energy efficient design keeps your power bill in control

    Regular Price: USD 399.99

    Sale Price USD 329.99

    Regular Price: USD 399.99

    Sale Price USD 329.99

  • EcoPlus Commercial Grade Water Chiller - 1/2 HP
    • Suitable for fresh or saltwater aquariums and much more
    • Equipped with a commercial grade titanium heat exchanger
    • Imported compressor is extremely efficient and dependable
    • Includes an LCD display and 30 ft remote control for ease of use
    • Packaged with two fittings to make plumbing the chiller easy
    USD 1,079.99
    USD 1,079.99

    Out of stock

  • EcoPlus Commercial Grade Water Chiller - 1 HP
    • Suitable for fresh or saltwater aquariums and much more
    • Equipped with a commercial grade titanium heat exchanger
    • Imported compressor is extremely efficient and dependable
    • Includes an LCD display and 30 ft remote control for ease of use
    • Packaged with two fittings to make plumbing the chiller easy
    USD 1,227.99
    USD 1,227.99

    Out of stock

  • EcoPlus Commercial Grade Water Chiller - 1 1/2 HP
    • Suitable for fresh or saltwater aquariums and much more
    • Equipped with a commercial grade titanium heat exchanger
    • Imported compressor is extremely efficient and dependable
    • Includes an LCD display and 30 ft remote control for ease of use
    • Packaged with two fittings to make plumbing the chiller easy
    USD 1,449.99
    USD 1,449.99

    Out of stock

  • Aqueon Preset Heater - 200 W
    • Pre-calibrated to an accurate 78&?deg; F, accurate to 1&?deg; degrees fahrenheit and require no manual adjustment. Appropriate for most tropical fish, these fully submersible heaters are made using shatter-resistant quartz glass for added durability. A red LED lightr indicates that the heater is active, and an automatic shut-off feature works to prevent overheating. Aqueon Preset Heaters are available in 50-Watt, 100-Watt, 150-Watt and 200-Watt models, and come backed by a 1 Year Manufacturer's
    • Appropriate for most tropical fish and fully submersible
    • Made using shatter-resistant quartz glass for added durability
    • Automatic shut-off feature prevents overheating
    • Backed by a 1 Year Manufacturer's Warranty

    Regular Price: USD 19.99

    Sale Price USD 14.32

    Regular Price: USD 19.99

    Sale Price USD 14.32

  • Aqueon Preset Heater - 150 W
    • Pre-calibrated to an accurate 78&?deg; F, accurate to 1&?deg; degrees fahrenheit and require no manual adjustment. Appropriate for most tropical fish, these fully submersible heaters are made using shatter-resistant quartz glass for added durability. A red LED lightr indicates that the heater is active, and an automatic shut-off feature works to prevent overheating. Aqueon Preset Heaters are available in 50-Watt, 100-Watt, 150-Watt and 200-Watt models, and come backed by a 1 Year Manufacturer's
    • Appropriate for most tropical fish and fully submersible
    • Made using shatter-resistant quartz glass for added durability
    • Automatic shut-off feature prevents overheating
    • Backed by a 1 Year Manufacturer's Warranty

    Regular Price: USD 17.99

    Sale Price USD 13.99

    Regular Price: USD 17.99

    Sale Price USD 13.99

  • EcoPlus Commercial Grade Chiller Fitting Kit
    Description Coming Soon!
    USD 17.99
    USD 17.99

    Out of stock

  • EcoPlus Chiller Fitting Kit - 1/4 HP
    Description Coming Soon!
    USD 10.49
    USD 10.49

    Out of stock

  • EcoPlus Aqua Heat Titanium Reservoir & Aquarium Heater - 300 W
    Description Coming Soon!

    Regular Price: USD 37.99

    Sale Price USD 29.99

    Regular Price: USD 37.99

    Sale Price USD 29.99

  • EcoPlus Aqua Heat Titanium Reservoir & Aquarium Heater - 200 W
    Description Coming Soon!

    Regular Price: USD 35.49

    Sale Price USD 28.99

    Regular Price: USD 35.49

    Sale Price USD 28.99

  • EcoPlus Water Chillers

    Price From: USD 329.99

    Price From: USD 329.99

  • EcoPlus Commercial Grade Water Chillers

    Price From: USD 1,079.99

    Price From: USD 1,079.99

    Out of stock

  • EcoPlus Chiller Fitting Kits

    Price From: USD 10.49

    Price From: USD 10.49

    Out of stock

  • EcoPlus Water Chiller - 1/4 HP
    • Suitable for fresh or saltwater aquariums and much more
    • Equipped with a high performance titanium heat exchanger
    • Durable and efficient compressor for added dependability
    • Includes a micro computer with built in digital LCD display
    • Energy efficient design keeps your power bill in control

    Regular Price: USD 512.99

    Sale Price USD 449.99

    Regular Price: USD 512.99

    Sale Price USD 449.99

  • Aqueon Preset Heater - 100 W
    • Pre-calibrated to an accurate 78&‌deg; F, accurate to 1&‌deg; degrees fahrenheit and require no manual adjustment. Appropriate for most tropical fish, these fully submersible heaters are made using shatter-resistant quartz glass for added durability. A red LED lightr indicates that the heater is active, and an automatic shut-off feature works to prevent overheating. Aqueon Preset Heaters are available in 50-Watt, 100-Watt, 150-Watt and 200-Watt models, and come backed by a 1 Year Manufacture
    • Appropriate for most tropical fish and fully submersible
    • Made using shatter-resistant quartz glass for added durability
    • Automatic shut-off feature prevents overheating
    • Backed by a 1 Year Manufacturer's Warranty

    Regular Price: USD 14.99

    Sale Price USD 10.99

    Regular Price: USD 14.99

    Sale Price USD 10.99

  • Fluval Fluval E Advanced Electronic Heaters
    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.

    Price From: USD 52.99

    Price From: USD 52.99

  • Aqueon Aquatic Flat Heater - 7.5 W
    • Ideal for small desktop aquariums up to 3 gallons
    • Energy-efficient heater consumes a mere 7.5 watts!
    • Easy to install with submersible design and suction cups
    • Secures to the sides or bottom of your aquarium

    Regular Price: USD 8.99

    Sale Price USD 6.49

    Regular Price: USD 8.99

    Sale Price USD 6.49

  • Aqueon Aquatic Flat Heater - 15 W
    • Ideal for small desktop aquariums up to 10 gallons
    • Energy-efficient heater consumes a mere 15 watts!
    • Easy to install with submersible design and suction cups
    • Secures to the sides or bottom of your aquarium

    Regular Price: USD 10.99

    Sale Price USD 7.99

    Regular Price: USD 10.99

    Sale Price USD 7.99

  • Zoo Med Digital Aquarium Thermometer
    • Simple to read with luxury LCD Display
    • Completely submersible & waterproof
    • Ideal for fresh & salt water aquariums

    Regular Price: USD 6.99

    Sale Price USD 4.99

    Regular Price: USD 6.99

    Sale Price USD 4.99

  • Cobalt Aquatics Neo-Therm Dual Heater - 300 W
    • Modern, super flat design
    • Easy to set "one touch" system
    • Accurate electronic thermostat (±0.5 degrees F)
    • LEDs display set and actual temperature
    • Shatterproof outer casing protects electrical components
    USD 119.23
    USD 119.23
  • Eheim Jager TruTemp Submersible Heater - 75 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
    USD 24.99
    USD 24.99
  • Eheim Jager TruTemp Submersible Heater - 125 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
    USD 28.99
    USD 28.99
  • Aqueon Preset Heater - 50 W
    • Pre-calibrated to an accurate 78&‌deg; F, accurate to 1&‌deg; degrees fahrenheit and require no manual adjustment. Appropriate for most tropical fish, these fully submersible heaters are made using shatter-resistant quartz glass for added durability. A red LED lightr indicates that the heater is active, and an automatic shut-off feature works to prevent overheating. Aqueon Preset Heaters are available in 50-Watt, 100-Watt, 150-Watt and 200-Watt models, and come backed by a 1 Year Manufacture
    • Appropriate for most tropical fish and fully submersible
    • Made using shatter-resistant quartz glass for added durability
    • Automatic shut-off feature prevents overheating
    • Backed by a 1 Year Manufacturer's Warranty

    Regular Price: USD 10.99

    Sale Price USD 7.99

    Regular Price: USD 10.99

    Sale Price USD 7.99

  • Price From: USD 28.99

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