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At AquaCave, we offer some of the best selection and best prices on Aquarium Heaters, Fish Tank Heaters, Titanium, Glass, Digital, Heater Controllers for you marine, reef, and freshwater aquarium.
Maintaining the correct temperature for tropical fish may be the single most important factor for a successful aquarium. Since fish do not have the ability to regulate their own body temperature, it is crucial that we can provide consistent water temperatures with minimal fluctuations.
Majority of fish cannot cope with stress from constant temperature fluctuations, which leads to a compromised immune system. This increases the probability of avoidable diseases, parasites, and bacterial infections.
Having a properly sized heater is one of the primary requirements for maintaining healthy aquatic ecosystem.

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  • Cobalt Neo-Therm Pro 150W Aquarium Heater Cobalt Neo-Therm Pro 150W Aquarium Heater

    Cobalt Aquatics

    Cobalt Neo-Therm Pro 150W Aquarium Heater

    Cobalt Neo-Therm Pro 150W Aquarium Heater The Cobalt Aquatics Neo-Therm Pro fully submersible electronic heaters feature innovative circuitry that constantly varies the power consumption of the heater depending on current tank conditions to maximize...

    $121.97
  • Finnex HC910M/TH500S Controller / Heater Combo Finnex HC910M/TH500S Controller / Heater Combo Finnex HC910M/TH500S Controller / Heater Combo

    Finnex

    Finnex HC910M/TH500S Controller / 500W Heater Combo

    Finnex HC910M/TH500S Controller / Heater Combo Finnex THS-300 - 800 Watts Titanium Heating Element with Guard The new TH-S Series features the same quality built titanium elements, differentiating itself by being engulfed in a highly protective heater...

    $119.98
  • Finnex HC910M/TH300S Controller / Heater Combo Finnex HC910M/TH300S Controller / Heater Combo Finnex HC910M/TH300S Controller / Heater Combo

    Finnex

    Finnex HC910M/TH300S Controller / 300W Heater Combo

    Finnex HC910M/TH300S Controller / Heater Combo Finnex THS-300 - 800 Watts Titanium Heating Element with Guard The new TH-S Series features the same quality built titanium elements, differentiating itself by being engulfed in a highly protective heater...

    $114.98
  • AquaEl ULTRA Heater 200 Watt AquaEl ULTRA Heater 200 Watt

    AquaEl

    AquaEl ULTRA Heater 200 Watt

    AquaEl ULTRA Heater 200 Watt The heater is easy to control using the ONE-TOUCH system that employs a single button surrounded by a ring of LEDs indicating the current and set temperatures. Temperature Regulation Overheat Protection Fully...

    $79.99
  • Eheim ThermoControl Heater E250 watt Eheim ThermoControl Heater E250 watt Eheim ThermoControl Heater E250 watt

    Eheim

    Eheim ThermoControl Heater E250 watt

    Eheim ThermoControl Heater E250 watt With the EHEIM thermocontrol-e heating element your fish get the right temperature even more precisely - in every aquarium. The obvious ideas are often the best. This also applies to the aquarium heating element...

    $74.80
  • AquaEl ULTRA Heater 100 Watt AquaEl ULTRA Heater 100 Watt

    AquaEl

    AquaEl ULTRA Heater 100 Watt

    AquaEl ULTRA Heater 100 Watt The heater is easy to control using the ONE-TOUCH system that employs a single button surrounded by a ring of LEDs indicating the current and set temperatures. Temperature Regulation Overheat Protection Fully...

    $64.99
  • Eheim ThermoControl Heater E125 watt Eheim ThermoControl Heater E125 watt Eheim ThermoControl Heater E125 watt

    Eheim

    Eheim ThermoControl Heater E125 watt

    Eheim ThermoControl Heater E125 watt With the EHEIM thermocontrol-e heating element your fish get the right temperature even more precisely - in every aquarium. The obvious ideas are often the best. This also applies to the aquarium heating element...

    $64.25
  • Eheim ThermoControl Heater E150 watt Eheim ThermoControl Heater E150 watt Eheim ThermoControl Heater E150 watt

    Eheim

    Eheim ThermoControl Heater E150 watt

    Eheim ThermoControl Heater E150 watt With the EHEIM thermocontrol-e heating element your fish get the right temperature even more precisely - in every aquarium. The obvious ideas are often the best. This also applies to the aquarium heating element...

    $64.25
  • Hagen Fluval E 100 Watt Electronic Aquarium Heater Hagen Fluval E 100 Watt Electronic Aquarium Heater

    Fluval

    Hagen Fluval E 100 Watt Electronic Aquarium Heater

    Hagen Fluval E 100 Watt Electronic Aquarium Heater E Series LCD Aquarium Heaters from Fluval are the most advanced submersible aquarium heaters on the market today. Computer-controlled precision and fish-safe design contributes more than ever to the...

    MSRP: $65.99
    $61.99
  • Hagen Fluval E 300 Watt Electronic Aquarium Heater Hagen Fluval E 300 Watt Electronic Aquarium Heater

    Fluval

    Hagen Fluval E 300 Watt Electronic Aquarium Heater

    Hagen Fluval E 300 Watt Electronic Aquarium Heater E Series LCD Aquarium Heaters from Fluval are the most advanced submersible aquarium heaters on the market today. Computer-controlled precision and fish-safe design contributes more than ever to the...

    MSRP: $68.99
    $61.99
  • Hagen Fluval E 200 Watt Electronic Aquarium Heater Hagen Fluval E 200 Watt Electronic Aquarium Heater

    Fluval

    Hagen Fluval E 200 Watt Electronic Aquarium Heater

    Hagen Fluval E 200 Watt Electronic Aquarium Heater E Series LCD Aquarium Heaters from Fluval are the most advanced submersible aquarium heaters on the market today. Computer-controlled precision and fish-safe design contributes more than ever to the...

    MSRP: $66.99
    $59.99
  • Finnex HMK-50 Titanium Aquarium Heater - 50 watt Finnex HMK-50 Titanium Aquarium Heater - 50 watt Finnex HMK-50 Titanium Aquarium Heater - 50 watt

    Finnex

    Finnex HMK-50 Titanium Aquarium Heater - 50 watt

    Finnex HMK Titanium Aquarium Heater - 50 watt The Finnex HMK Titanium Aquarium Heater Series Introducing the Finnex HMK Titanium Aquarium Heater - Elevate Your Aquatic World to New Heights of Precision and Safety!   Key Features: 1. Titanium...

    $59.00
  •  250W Jager Aquarium Heater   250W Jager Aquarium Heater   250W Jager Aquarium Heater   250W Jager Aquarium Heater

    Eheim

    250W Jager Aquarium Heater

    250W Jager Aquarium Heater Jager has over 50 years of experience manufacturing high quality aquarium heaters. TheJager heaters are recognizable by millions of satisfied customers around the world. All Jager heaters are black and have a 6' double...

    $44.99
  • 200W Jager Aquarium Heater 200W Jager Aquarium Heater 200W Jager Aquarium Heater

    Eheim

    200W Jager Aquarium Heater

    200W Jager Aquarium Heater Jager has over 50 years of experience manufacturing high quality aquarium heaters. The Jager heaters are recognizable by millions of satisfied customers around the world. All Jager heaters are black and have a 6' double...

    $44.99
  • 300W Jager Aquarium Heater 300W Jager Aquarium Heater 300W Jager Aquarium Heater 300W Jager Aquarium Heater

    Eheim

    300W Jager Aquarium Heater

    300W Jager Aquarium Heater Jager has over 50 years of experience manufacturing high quality aquarium heaters. The Jager heaters are recognizable by millions of satisfied customers around the world. All Jager heaters are black and have a 6' double...

    $44.99
  • Finnex HMAS 300 Watts Titanium Heater with Guard Finnex HMAS 300 Watts Titanium Heater with Guard

    Finnex

    Finnex HMAS 300 Watts Titanium Heater with Guard

    Finnex HMAS 300 Watts Titanium Heater with Guarder Finnex compact electronic heater are fully submersible. This titanium heaters can be used in both fresh and salt water aquarium. Ultimate design external temperature controller. Built in with automatic...

    $41.99
  • 100W Jager Aquarium Heater 100W Jager Aquarium Heater 100W Jager Aquarium Heater 100W Jager Aquarium Heater 100W Jager Aquarium Heater

    Eheim

    100W Jager Aquarium Heater

    100W Jager Aquarium Heater Jager has over 50 years of experience manufacturing high quality aquarium heaters. The Jager heaters are recognizable by millions of satisfied customers around the world. All Jager heaters are black and have a 6' double...

    $39.99
  • 150W Jager Aquarium Heater 150W Jager Aquarium Heater 150W Jager Aquarium Heater 150W Jager Aquarium Heater

    Eheim

    150W Jager Aquarium Heater

    150W Jager Aquarium Heater Jager has over 50 years of experience manufacturing high quality aquarium heaters. The Jager heaters are recognizable by millions of satisfied customers around the world. All Jager heaters are black and have a 6' double...

    $39.99
  • Hagen Fluval M 200 Watt Submersible Aquarium Heater

    Fluval

    Hagen Fluval M 200 Watt Submersible Aquarium Heater

    Hagen Fluval M 200 Watt Submersible Aquarium Heater Unique reflective technology goes into each Fluval M Series Aquarium Heater. This advanced feature helps your heater "vanish" into your aquascape. Other features include an easy-to-adjust temperature...

    $38.99
  • Hagen Fluval M 100 Watt Submersible Aquarium Heater

    Fluval

    Hagen Fluval M 100 Watt Submersible Aquarium Heater

    Hagen Fluval M 100 Watt Submersible Aquarium Heater   Unique reflective technology goes into each Fluval M Series Aquarium Heater. This advanced feature helps your heater "vanish" into your aquascape. Other features include an easy-to-adjust...

    $35.99
  • Hagen Fluval M 150 Watt Submersible Aquarium Heater.

    Fluval

    Hagen Fluval M 150 Watt Submersible Aquarium Heater

    Hagen Fluval M 150 Watt Submersible Aquarium Heater.Unique reflective technology goes into each Fluval M Series Aquarium Heater. This advanced feature helps your heater "vanish" into your aquascape. Other features include an easy-to-adjust temperature...

    $35.99
  • Hagen Fluval M 50 Watt Submersible Aquarium Heater.

    Fluval

    Hagen Fluval M 50 Watt Submersible Aquarium Heater

    Hagen Fluval M 50 Watt Submersible Aquarium Heater.Unique reflective technology goes into each Fluval M Series Aquarium Heater. This advanced feature helps your heater "vanish" into your aquascape. Other features include an easy-to-adjust temperature...

    $35.99
  • 50W Jager Aquarium Heater 50W Jager Aquarium Heater 50W Jager Aquarium Heater 50W Jager Aquarium Heater

    Eheim

    50W Jager Aquarium Heater

    50W Jager Aquarium Heater Jager has over 50 years of experience manufacturing high quality aquarium heaters. The Jager heaters are recognizable by millions of satisfied customers around the world. All Jager heaters are black and have a 6' double...

    $34.99
  • 75W Jager Aquarium Heater 75W Jager Aquarium Heater 75W Jager Aquarium Heater 75W Jager Aquarium Heater

    Eheim

    75W Jager Aquarium Heater

    75W Jager Aquarium Heater Jager has over 50 years of experience manufacturing high quality aquarium heaters. The Jager heaters are recognizable by millions of satisfied customers around the world. All Jager heaters are black and have a 6' double...

    $34.99
  • Finnex HPC 100 Watt Digital Quartz Glass Heater Finnex HPC 100 Watt Digital Quartz Glass Heater

    Finnex

    Finnex HPC 100 Watt Digital Quartz Glass Heater

    Finnex HPC 100 Watt Digital Quartz Glass Heater The HPC heater series is a glass heater that uses an advanced digital processor that monitors and controls the water temperature in your aquarium. The heating controller receives temperature data from the...

    $34.99
  • Sicce JOLLY PRESET 25 - Submersible Heater - 25 watt Sicce JOLLY PRESET 25 - Submersible Heater - 25 watt Sicce JOLLY PRESET 25 - Submersible Heater - 25 watt Sicce JOLLY PRESET 25 - Submersible Heater - 25 watt Sicce JOLLY PRESET 25 - Submersible Heater - 25 watt

    Sicce

    Sicce JOLLY PRESET 25 - Submersible Heater - 25 watt

    Sicce JOLLY PRESET 25 - Submersible Heater - 25 watt Jolly Preset Heaters have an Auto Shut Off feature that automatically turns the heater off when the temperature is reached. JOLLY plastic heaters are designed for small freshwater, marine, and...

    $34.99
  • Finnex HMAS 150 Watts Titanium Heater with Guard Finnex HMAS 150 Watts Titanium Heater with Guard

    Finnex

    Finnex HMAS 150 Watts Titanium Heater with Guard

    Finnex HMAS 150 Watts Titanium Heater with Guarder Finnex compact electronic heater are fully submersible. This titanium heaters can be used in both fresh and salt water aquarium. Ultimate design external temperature controller. Built in with automatic...

    $32.99
  • Zoo Med Mag Clip (Magnet Suction Cup)

    ZooMed

    Zoo Med Mag Clip (Magnet Suction Cup)

    Zoo Med Mag Clip (Magnet Suction Cup).Industrial strength magnetic suction cup with interchangeable clips. Never replace your suctions cups again!Additional Information:Includes 6 assorted sizes of nylon clips to hold all types of aquarium accessories...

    $12.95
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