SuperFish Eco Heater 100w (20-70L): Heaters: Aquarium - Buy pond equipment from Pondkeeper: Pond building made easy.
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T150 Fully Electronic Aquarium Heater, 150W, up to 45 US Gal / 150 L - Fluval USA
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300w Fish Tank Heater - Allpondsolutions
Yangers Fish Tank Submersible Aquarium Heater 100W, Mini Small Digital Temperature Display with in Line Controller Smart Auto Water Temperature Thermostat for 50 60L 100 Litre Tank UK Plug (50L-100L) : Amazon.co.uk:
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