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Shop Fish Heaters at Pet n Pony, featuring reliable aquarium heaters from Fluval to maintain the perfect temperature for your tropical fish.

Maintaining a stable water temperature is essential for tropical fish health. Our Fluval aquarium heaters are designed for accuracy, reliability, and ease of use, with adjustable thermostats and clear temperature indicators to keep your tank at the ideal temperature for your fish species.

Keep your tropical fish healthy and comfortable with a quality Fluval aquarium heater from our range.

Fluval Wireless 2-in-1 Digital Thermometer shows water and room temps; retail packaged.
Fluval Wireless 2-in-1 Digital Thermometer
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Four Fluval E Digital Heater boxes from Fluval stand upright in a row.
Fluval E Digital Heater
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Fluval Submersible Digital Thermometer in package with fish graphics and blue background.
Fluval Submersible Digital Thermometer £10.99
Fluval T50 Heater, 50W, for 15-gal aquariums; safe, accurate heating by Fluval.
Fluval T50 Heater by Fluval, black, cylindrical, 10.5"x1.2", for submersible aquarium use.
Fluval T50 Heater by Fluval being adjusted and attached to a tank with suction cups.
Fluval T50 Heater shows low water alert with red X and blue shield for safety.
Two Fluval T50 black heaters with red and blue lights beside a 360° temperature symbol.
Fluval T50 Heater, 50W, for 15-gal aquariums; safe, accurate heating by Fluval.
Fluval T50 Heater £26.99 £35.99
Fluval T300 Heater by Fluval, 300W for up to 80 US Gal aquariums.
Fluval T300 Heater by Fluval, black cylindrical, 14"x1.2", with inch and cm measurement labels.
Hand adjusts a Fluval T300 Heater by Fluval attached inside an aquarium.
Fluval T300 Heater by Fluval in water with a red X and blue shield checkmark icon beside it.
Two black pipes, red/blue lights, and 360° symbol—perfect for your Fluval T300 Heater.
Fluval T300 Heater by Fluval, 300W for up to 80 US Gal aquariums.
Fluval T300 Heater
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Fluval T100 Heater by Fluval, 100W for aquariums up to 30 gallons.
Fluval T100 Heater by Fluval, black cylinder, 10.5" tall x 1.2" diameter on white background.
Adjusting a Fluval T100 Heater in a fish tank.
Two Fluval T100 black heaters with red and blue lights, next to a colorful 360° symbol.
Fluval T100 Heater by Fluval, 100W for aquariums up to 30 gallons.
Fluval T100 Heater £28.99 £37.99
Fluval T150 Heater by Fluval, 150W submersible aquarium heater with digital display, up to 45gal.
Fluval T150 Heater by Fluval, black, cylindrical, 12.5"x1.2", inch/cm measurement labels.
Fluval T150 Heater by Fluval is a submersible aquarium heater with adjustable temperature control.
Fluval T150 Heater by Fluval keeps aquarium water temperature regulated.
Two Fluval T150 Heaters, one red-lit and one blue-lit, next to a 360° logo.
Fluval T150 Heater by Fluval, 150W submersible aquarium heater with digital display, up to 45gal.
Fluval T150 Heater £28.99 £37.99

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