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  • FISH POND EQUIPMENT
    • Pond Filters
      • UV pressure filters for ponds
      • Subermerged UV pond filtration
      • Pond gravity filters
      • UV filters for fish ponds
    • POND PUMPS
      • Low voltage pumps (12 volt and 24 volt)
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      • Automatic Fish Feeder for ponds
      • Pond Vacuum
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    • SPARE PARTS
      • Bioballs for Ponds and Aquariums
      • Pond Hose
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  • AQUARIUM EQUIPMENT
    • Fish Tank Filters
      • Canister Filters
      • Internal Filters
      • Hang On Back Filters
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    • Aquarium Supplies
      • Aquarium Air Pumps
      • Aquarium Heaters
      • Aquarium Lights
      • Aquarium Shrimp
      • Aquariums and Fish Tanks
      • Fish Tank Decorations
      • Gravel and Substrate
    • Aquascaping Supplies
      • Aquarium CO2
      • Aquarium Plant Fertilisers
      • Aquarium Soil and Substrates
      • Aquascaping Tools
      • Hardscape
    • Spare Parts for Aquariums
      • Filter Media and Replacement Sponges
      • Hose and Tubing
      • Other Aquarium Spare Parts
  • Fish Food for sale
    • Koi Food
    • Goldfish Food
    • Fish Flakes
    • Tropical Fish Food
  • CHEMICALS AND MEDICATIONS
    • Algaecides and Flocculents
    • Beneficial Bacteria
    • Chemicals for Ponds
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  • FAQs
    • The Fish Works Pond Shop
      • Who are we?
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    • Pond and Aquarium Filtration
      • Biological Filtration
      • Fish Pond Pumps
      • Aquaponics Systems for your fish pond
    • Pond and Aquarium Maintenance
      • Your pond maintenance schedule
      • Maintaining good water quality in your fish pond
      • Responsible water gardening in drought conditions
      • Algae in Fish ponds
    • General FAQs
      • Are my fish happy?
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  • Home
  • FISH POND EQUIPMENT
    • Pond Filters
      • UV pressure filters for ponds
      • Subermerged UV pond filtration
      • Pond gravity filters
      • UV filters for fish ponds
    • POND PUMPS
      • Low voltage pumps (12 volt and 24 volt)
      • 240 volt water feature pumps
      • Dirty water pumps
      • Outdoor Pond Air Pumps
      • Solar Pumps
    • Pond Supplies (other)
      • Fish Nets
      • Fish Ponds For Sale
      • Pond Decorations
      • Pond Lighting
      • Pond Liner for sale
      • Pond sealants and repair kits
      • Pond Skimmers
      • Aquascape pond kits
      • Automatic Fish Feeder for ponds
      • Pond Vacuum
      • Aquascape pond products
    • SPARE PARTS
      • Bioballs for Ponds and Aquariums
      • Pond Hose
      • Fish pond filter sponges
      • Hose Fittings, Parts and Clamps
      • OASE Filter Spare Parts
      • Pump Impellers
      • UV Globes
      • Other Spare Parts
  • AQUARIUM EQUIPMENT
    • Fish Tank Filters
      • Canister Filters
      • Internal Filters
      • Hang On Back Filters
      • Sponge Filters
    • Aquarium Supplies
      • Aquarium Air Pumps
      • Aquarium Heaters
      • Aquarium Lights
      • Aquarium Shrimp
      • Aquariums and Fish Tanks
      • Fish Tank Decorations
      • Gravel and Substrate
    • Aquascaping Supplies
      • Aquarium CO2
      • Aquarium Plant Fertilisers
      • Aquarium Soil and Substrates
      • Aquascaping Tools
      • Hardscape
    • Spare Parts for Aquariums
      • Filter Media and Replacement Sponges
      • Hose and Tubing
      • Other Aquarium Spare Parts
  • Fish Food for sale
    • Koi Food
    • Goldfish Food
    • Fish Flakes
    • Tropical Fish Food
  • CHEMICALS AND MEDICATIONS
    • Algaecides and Flocculents
    • Beneficial Bacteria
    • Chemicals for Ponds
    • Aquarium Chemicals
    • Medicines
    • Pond Water Test Kits
    • Water plant fertiliser
  • Koi Fish For Sale
  • FAQs
    • The Fish Works Pond Shop
      • Who are we?
      • Pond Fish For Sale
      • Pond water plants for sale
      • Biodiversity ponds
    • Pond and Aquarium Filtration
      • Biological Filtration
      • Fish Pond Pumps
      • Aquaponics Systems for your fish pond
    • Pond and Aquarium Maintenance
      • Your pond maintenance schedule
      • Maintaining good water quality in your fish pond
      • Responsible water gardening in drought conditions
      • Algae in Fish ponds
    • General FAQs
      • Are my fish happy?
      • Fish Myth Buster!
      • Water feature Ideas
  • Merch
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Home Shop AQUARIUM EQUIPMENT Aquarium Supplies

Aquarium Heaters

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In stock (can be backordered)

AquaOne Premium glass thermometer for sale

Aqua One Premium Glass Thermometer – 15cm

$4.95
Easy-to-read glass thermometer with silicone suction cup, mercury-free and perfect for monitoring water temperature in all types of aquariums.
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In stock (can be backordered)

OASE Digital Fish Tank Thermometer

OASE Digital Fish Tank Thermometer

$39.95
Highly accurate external aquarium thermometer by OASE
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Only 1 left in stock (can be backordered)

OASE HeatUp 50 for sale

OASE HeatUp 50

$75.00
OASE HeatUp 50 adjustable aquarium heater for tanks up to 50L
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In stock (can be backordered)

oase heatup 100

OASE HeatUp 100

$75.00
OASE HeatUp 100 adjustable aquarium heater for tanks up to 100L
Add to cart

Only 2 left in stock (can be backordered)

OASE HeatUp 150

OASE HeatUp 150

$77.00
OASE HeatUp 150 adjustable aquarium heater for tanks up to 150L
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Only 2 left in stock (can be backordered)

OASE HeatUp 300 for sale

OASE HeatUp 200

$95.50
OASE HeatUp 200 The OASE HeatUp 200 adjustable aquarium heater for tanks up to 200L. OASE HeatUp Range The OASE HeatUp range of fully adjustable,...
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Only 2 left in stock (can be backordered)

oase heatup 400 for sale

OASE HeatUp 400

$130.00
OASE HeatUp 400 adjustable aquarium heater for tanks up to 400L
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Only 2 left in stock (can be backordered)

oase heatup 300 aquarium heater for sale

OASE HeatUp 300

$110.00
OASE HeatUp 300 adjustable aquarium heater for tanks up to 300L
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In stock (can be backordered)

Sale
aquaone preset 10W nano heater for sale

Aquaone nano plastic heater 13.5cm 10W

$25.00 Original price was: $25.00.$20.00Current price is: $20.00.
Fully submersible nano heater equipped with an electronic thermometer set to 25°C, perfect for small aquariums.
Add to cart

Only 2 left in stock (can be backordered)

AquaOne Glass Heater 25W

AquaOne Glass Heater 25W

$25.00
The AquaOne Glass Heater 25W will effortlessly maintain an ideal aquarium temperature for your fish. To see if this heater is the correct size for your tank please view the table below.
  • suitable for both fresh and marine aquariums
  • double insulated and fully submersible
  • easy to use thermostat and temperature settings
  • 20°C - 34°C temperature range to suit most aquatic species
  • automatic shut off and 'on' light
Add to cart

Only 1 left in stock (can be backordered)

AquaOne Glass Heater 55W

AquaOne Glass Heater 55W

$28.00
The AquaOne Glass Heater 55W will effortlessly maintain an ideal aquarium temperature for your fish. To see if this heater is the correct size for your tank please view the table below.
  • suitable for both fresh and marine aquariums
  • double insulated and fully submersible
  • easy to use thermostat and temperature settings
  • 20°C - 34°C temperature range to suit most aquatic species
  • automatic shut off and 'on' light
Add to cart

Only 2 left in stock (can be backordered)

AquaOne Glass Heater 150W

AquaOne Glass Heater 150W

$32.00
The AquaOne Glass Heater 150W will effortlessly maintain an ideal aquarium temperature for your fish. To see if this heater is the correct size for your tank please view the table below.
  • suitable for both fresh and marine aquariums
  • double insulated and fully submersible
  • easy to use thermostat and temperature settings
  • 20°C - 34°C temperature range to suit most aquatic species
  • automatic shut off and 'on' light
Add to cart
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Aquarium Heaters

Aquarium heaters are essential for maintaining a stable, comfortable water temperature in tropical fish tanks. All fish have different temperature requirements. A heater will allow you to suit the water temperature to your species. Consistent warmth helps prevent stress and disease, supporting the health and well-being of your fish and plants. Whether you keep delicate tropical species or simply want to avoid temperature swings, a good quality heater is one of the most important investments you can make.

How Do Aquarium Heaters Work?

Heaters use a built-in thermostat to automatically maintain the water at your chosen temperature. When the water cools below the set point, the heater switches on to gently warm the tank back to the desired level. Once the temperature is reached, it shuts off again. This ensures a steady environment without constant manual adjustments.

important! Using a separate thermometer alongside your heater can help you confirm that your tank is staying at the correct temperature without fluctuations.

Benefits of using a Heater in your Fish Tank

  • Maintains a consistent temperature for tropical fish
  • Helps prevent disease caused by temperature fluctuations
  • Supports healthy metabolism and immune systems
  • Simple to set and monitor
  • Available in various sizes to suit different tanks

Choosing the Right Heater for Your Aquarium

When selecting a heater, consider the volume of your tank, and the temperature requirements of your fish species. We stock a wide range of adjustable heaters in different wattages to suit everything from small aquariums to large tropical setups.

💡 Not sure which aquarium heater is right for you? Contact us for free expert advice.

Categories

  • AQUARIUM EQUIPMENT
    • Aquarium Supplies
      • Aquarium Air Pumps
      • Aquarium Heaters
      • Aquarium Lights
      • Aquarium Shrimp
      • Aquariums and Fish Tanks
      • Fish Tank Decorations
      • Gravel and Substrate
      • Nets and Accessories
    • Aquascaping Supplies
      • Aquarium CO2
      • Aquarium Plant Fertilisers
      • Aquarium Soil and Substrates
      • Aquascaping Tools
      • Hardscape
      • Other Aquascaping Supplies
    • Fish Tank Filters
      • Canister Filters
      • Hang On Back Filters
      • Internal Filters
      • Sponge Filters
    • Spare Parts for Aquariums
      • Filter Media and Replacement Sponges
      • Hose and Tubing
      • Other Aquarium Spare Parts
  • Fish Food for sale
    • Fish Flakes
    • Goldfish Food
    • Koi Food
    • Tropical Fish Food
  • FISH POND CHEMICALS AND MEDICATIONS
    • Algaecides and Flocculents
    • Aquarium Chemicals
    • Beneficial Bacteria
    • Chemicals for Ponds
    • Pond and Aquarium Medicines
    • Pond plant fertiliser
    • Water Test Kits
  • FISH POND EQUIPMENT
    • Pond Filters
      • Drum filter
      • Pond gravity filters
      • Subermerged UV pond filtration
      • UV filters for fish ponds
      • UV pressure filters for ponds
    • POND PUMPS
      • 240 volt water feature pumps
      • Dirty water pumps
      • Low voltage pumps (12 volt and 24 volt)
      • Outdoor Pond Air Pumps
      • Solar Pumps
    • Pond Supplies (other)
      • Aquascape pond kits
      • Aquascape pond products
      • Automatic Fish Feeder for ponds
      • Fish Nets
      • Fish Ponds For Sale
      • Pond Decorations
      • Pond Lighting
      • Pond Liner for sale
      • Pond sealants and repair kits
      • Pond Skimmers
      • Pond Vacuum
    • SPARE PARTS
      • Air Pump Accessories
      • Aquarium accessories
      • Bioballs for Ponds and Aquariums
      • Fish pond filter sponges
      • Hose Fittings, Parts and Clamps
      • OASE Filter Spare Parts
      • Other Spare Parts
      • Pond Hose
      • Pump Impellers
      • UV Globes
  • Merch
  • The Fish Works fish pond supplies
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