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At AquaCave, we offer some of the best selection and best prices on Finnex Heaters & Controllers for your marine, reef, and freshwater aquarium.

49 of 49 Items
  • Finnex STE-800 Titanium Heater with Controller Finnex STE-800 Titanium Heater with Controller Finnex STE-800 Titanium Heater with Controller Finnex STE-800 Titanium Heater with Controller Finnex STE-800 Titanium Heater with Controller

    Finnex

    Finnex STE-800 Titanium Heater with Controller

    Finnex STE-800 Titanium Heater with Controller STE Titanium Heater Series   Safety: Redundancy circuit technology, non-resumable fuse, safety guard Titanium Heating Element: Virtually unbreakable, corrosion resistant Controller:  Smart 68-92 deg F,...

    $129.99
  • Finnex STE-600 Titanium Heater with Controller Finnex STE-600 Titanium Heater with Controller Finnex STE-600 Titanium Heater with Controller Finnex STE-600 Titanium Heater with Controller Finnex STE-600 Titanium Heater with Controller

    Finnex

    Finnex STE-600 Titanium Heater with Controller

    Finnex STE-600 Titanium Heater with Controller STE Titanium Heater Series   Safety: Redundancy circuit technology, non-resumable fuse, safety guard Titanium Heating Element: Virtually unbreakable, corrosion resistant Controller:  Smart 68-92 deg F,...

    $118.99
  • Finnex HC-820M Digital Heater Controller/800W Heater Combo Finnex HC-820M Digital Heater Controller/800W Heater Combo Finnex HC-820M Digital Heater Controller/800W Heater Combo Finnex HC-820M Digital Heater Controller/800W Heater Combo

    Finnex

    Finnex HC-820M Digital Heater Controller/800W Heater Combo

    Finnex HC-820M Digital Heater Controller/800W Heater Combo Finnex HC-820M Digital Heater Controller +Sensor The HC-820M Finnex heater controller uses an advanced digital processor that monitors and controls the water temperature in your aquarium. The...

    Was: $129.98
    Now: $116.98
  • Finnex HC-820M Digital Heater Controller/500W Heater Combo Finnex HC-820M Digital Heater Controller/500W Heater Combo Finnex HC-820M Digital Heater Controller/500W Heater Combo Finnex HC-820M Digital Heater Controller/500W Heater Combo

    Finnex

    Finnex HC-820M Digital Heater Controller/500W Heater Combo

    Finnex HC-820M Digital Heater Controller/500W Heater Combo Finnex HC-820M Digital Heater Controller +Sensor The HC-820M Finnex heater controller uses an advanced digital processor that monitors and controls the water temperature in your aquarium. The...

    Was: $119.98
    Now: $107.98
  • Finnex HC810M/TH800S Controller / 800W Heater Combo Finnex HC810M/TH800S Controller / 800W Heater Combo Finnex HC810M/TH800S Controller / 800W Heater Combo

    Finnex

    Finnex HC810M/TH800S Controller / 800W Heater Combo

    Finnex HC810M/TH800S Controller / Heater ComboFinnex 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...

    Was: $119.98
    Now: $107.98
  • Finnex STE-400 Titanium Heater with Controller Finnex STE-400 Titanium Heater with Controller Finnex STE-400 Titanium Heater with Controller Finnex STE-400 Titanium Heater with Controller Finnex STE-400 Titanium Heater with Controller

    Finnex

    Finnex STE-400 Titanium Heater with Controller

    Finnex STE-400 Titanium Heater with Controller STE Titanium Heater Series   Safety: Redundancy circuit technology, non-resumable fuse, safety guard Titanium Heating Element: Virtually unbreakable, corrosion resistant Controller:  Smart 68-92 deg F,...

    $106.99
  • Finnex HC-820M Digital Heater Controller/300W Heater Combo Finnex HC-820M Digital Heater Controller/300W Heater Combo Finnex HC-820M Digital Heater Controller/300W Heater Combo Finnex HC-820M Digital Heater Controller/300W Heater Combo

    Finnex

    Finnex HC-820M Digital Heater Controller/300W Heater Combo

    Finnex HC-820M Digital Heater Controller/300W Heater Combo Finnex HC-820M Digital Heater Controller +Sensor The HC-820M Finnex heater controller uses an advanced digital processor that monitors and controls the water temperature in your aquarium. The...

    Was: $114.98
    Now: $103.48
  • Finnex HC810M/TH500S Controller / 500W Heater Combo Finnex HC810M/TH500S Controller / 500W Heater Combo Finnex HC810M/TH500S Controller / 500W Heater Combo

    Finnex

    Finnex HC810M/TH500S Controller / 500W Heater Combo

    Finnex HC810M/TH500S Controller / Heater ComboFinnex 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...

    Was: $109.98
    Now: $98.98
  • Finnex STE-200 Titanium Heater with Controller Finnex STE-200 Titanium Heater with Controller Finnex STE-200 Titanium Heater with Controller Finnex STE-200 Titanium Heater with Controller Finnex STE-200 Titanium Heater with Controller

    Finnex

    Finnex STE-200 Titanium Heater with Controller

    Finnex STE-200 Titanium Heater with Controller STE Titanium Heater Series   Safety: Redundancy circuit technology, non-resumable fuse, safety guard Titanium Heating Element: Virtually unbreakable, corrosion resistant Controller:  Smart 68-92 deg F,...

    $94.99
  • Finnex HC810M/TH300S Controller / 300W Heater Combo Finnex HC810M/TH300S Controller / 300W Heater Combo Finnex HC810M/TH300S Controller / 300W Heater Combo

    Finnex

    Finnex HC810M/TH300S Controller / 300W Heater Combo

    Finnex HC810M/TH300S Controller / Heater ComboFinnex 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...

    Was: $104.98
    Now: $94.48
  • Finnex HC-820W Digital Heater Controller Finnex HC-820W Digital Heater Controller

    Finnex

    Finnex HC-820W Digital Heater Controller

    Finnex HC-820W Digital Heater Controller 1000 Watt Max Output Load with Dual Relay Protection 1/10th Degree Temperature Calibration 3 Digit Digital Display & Control Over Heating Audio Alert Temperature Saving Memory Protection ± .5°F...

    $69.99
  • Finnex HMK-500 Titanium Aquarium Heater - 500 watt Finnex HMK-500 Titanium Aquarium Heater - 500 watt Finnex HMK-500 Titanium Aquarium Heater - 500 watt

    Finnex

    Finnex HMK-500 Titanium Aquarium Heater - 500 watt

    Finnex HMK Titanium Aquarium Heater - 500 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...

    Was: $72.99
    Now: $62.04
  • Finnex HC-820M Digital Heater Controller Finnex HC-820M Digital Heater Controller

    Finnex

    Finnex HC-820M Digital Heater Controller

    Finnex HC-820M Digital Heater Controller +Sensor The HC-820M Finnex heater controller uses an advanced digital processor that monitors and controls the water temperature in your aquarium. The heating controller receives temperature data from the remote...

    $59.99
  • Finnex HMK-300 Titanium Aquarium Heater - 300 watt Finnex HMK-300 Titanium Aquarium Heater - 300 watt Finnex HMK-300 Titanium Aquarium Heater - 300 watt

    Finnex

    Finnex HMK-300 Titanium Aquarium Heater - 300 watt

    Finnex HMK Titanium Aquarium Heater - 300 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...

    Was: $68.99
    Now: $58.64
  • Finnex HMH 500 Watt Digital Heater Finnex HMH 500 Watt Digital Heater

    Finnex

    Finnex HMH 500 Watt Digital Heater

    Finnex HMH 500 Watt Digital Heater The HMH heater series uses an advanced digital processor that monitors and controls the water temperature in your aquarium. The heating controller receives temperature data from a sensor in the heater tube. The...

    Was: $64.99
    Now: $55.24
  • Finnex HMS 500 Watt Digital Heater Finnex HMS 500 Watt Digital Heater

    Finnex

    Finnex HMS 500 Watt Digital Heater

    Finnex HMS 500 Watt Digital Heater Temperature Steady Low Variance TechnologyThe HMS heater series uses an advanced digital processor that monitors and controls thewater temperature in your aquarium. The heating controller receives temperature data...

    Was: $64.99
    Now: $55.24
  • Finnex HMK-200 Titanium Aquarium Heater - 200 watt Finnex HMK-200 Titanium Aquarium Heater - 200 watt Finnex HMK-200 Titanium Aquarium Heater - 200 watt

    Finnex

    Finnex HMK-200 Titanium Aquarium Heater - 200 watt

    Finnex HMK Titanium Aquarium Heater - 200 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...

    Was: $63.99
    Now: $54.39
  • Finnex HMK-150 Titanium Aquarium Heater - 150 watt Finnex HMK-150 Titanium Aquarium Heater - 150 watt Finnex HMK-150 Titanium Aquarium Heater - 150 watt

    Finnex

    Finnex HMK-150 Titanium Aquarium Heater - 150 watt

    Finnex HMK Titanium Aquarium Heater - 150 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...

    Was: $60.99
    Now: $51.84
  • Finnex HMS 300 Watt Digital Heater Finnex HMS 300 Watt Digital Heater

    Finnex

    Finnex HMS 300 Watt Digital Heater

    Finnex HMS 300 Watt Digital Heater Temperature Steady Low Variance TechnologyThe HMS heater series uses an advanced digital processor that monitors and controls thewater temperature in your aquarium. The heating controller receives temperature data...

    Was: $59.99
    Now: $50.99
  • Finnex HMK-100 Titanium Aquarium Heater - 100 watt Finnex HMK-100 Titanium Aquarium Heater - 100 watt Finnex HMK-100 Titanium Aquarium Heater - 100 watt

    Finnex

    Finnex HMK-100 Titanium Aquarium Heater - 100 watt

    Finnex HMK Titanium Aquarium Heater - 100 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...

    Was: $59.00
    Now: $50.15
  • 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...

    Was: $59.00
    Now: $50.15
  • Finnex HC810-M Digital Controller Finnex HC810-M Digital Controller

    Finnex

    Finnex HC810-M Digital Controller

    HC810M Controller Features:  Precision digital control, maintain water temperature at a constant level Advanced digital heating control technology with adjustable low/high temperature alert setting Automatic shut off overheat protection - when...

    $49.99
  • Finnex HMH 200 Watt Digital Heater Finnex HMH 200 Watt Digital Heater

    Finnex

    Finnex HMH 200 Watt Digital Heater

    Finnex HMH 200 Watt Digital Heater The HMH heater series uses an advanced digital processor that monitors and controls the water temperature in your aquarium. The heating controller receives temperature data from a sensor in the heater tube. The...

    Was: $54.99
    Now: $46.74
  • Finnex HMH 100 Watt Digital Heater Finnex HMH 100 Watt Digital Heater

    Finnex

    Finnex HMH 100 Watt Digital Heater

    Finnex HMH 100 Watt Digital Heater The HMH heater series uses an advanced digital processor that monitors and controls the water temperature in your aquarium. The heating controller receives temperature data from a sensor in the heater tube. The...

    Was: $49.99
    Now: $42.49
  • Finnex HMS 100 Watt Digital Heater Finnex HMS 100 Watt Digital Heater

    Finnex

    Finnex HMS 100 Watt Digital Heater

    Finnex HMS 100 Watt Digital Heater Temperature Steady Low Variance TechnologyThe HMS heater series uses an advanced digital processor that monitors and controls thewater temperature in your aquarium. The heating controller receives temperature data...

    Was: $49.99
    Now: $42.49
  • Finnex HMS 150 Watt Digital Heater Finnex HMS 150 Watt Digital Heater

    Finnex

    Finnex HMS 150 Watt Digital Heater

    Finnex HMS 150 Watt Digital Heater Temperature Steady Low Variance TechnologyThe HMS heater series uses an advanced digital processor that monitors and controls thewater temperature in your aquarium. The heating controller receives temperature data...

    Was: $49.99
    Now: $42.49
  • Finnex HMAS 500 Watts Titanium Heater with Guard Finnex HMAS 500 Watts Titanium Heater with Guard Finnex HMAS 500 Watts Titanium Heater with Guard

    Finnex

    Finnex HMAS 500 Watts Titanium Heater with Guard

    Finnex HMAS 500 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...

    Was: $45.99
    Now: $39.09
  • 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...

    Was: $41.99
    Now: $35.69
  • Finnex HMAS 200 Watts Titanium Heater with Guard Finnex HMAS 200 Watts Titanium Heater with Guard Finnex HMAS 200 Watts Titanium Heater with Guard

    Finnex

    Finnex HMAS 200 Watts Titanium Heater with Guard

    Finnex HMAS 200 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...

    Was: $35.99
    Now: $30.59
  • 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...

    Was: $34.99
    Now: $29.74
  • Finnex HPC 200 Watt Digital Quartz Glass Heater Finnex HPC 200 Watt Digital Quartz Glass Heater

    Finnex

    Finnex HPC 200 Watt Digital Quartz Glass Heater

    Finnex HPC 200 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...

    Was: $34.99
    Now: $29.74
  • Finnex HPC 300 Watt Digital Quartz Glass Heater Finnex HPC 300 Watt Digital Quartz Glass Heater

    Finnex

    Finnex HPC 300 Watt Digital Quartz Glass Heater

    Finnex HPC 300 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...

    Was: $34.99
    Now: $29.74
  • 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...

    Was: $32.99
    Now: $28.04
49 of 49 Items