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Aquarium Heater, 300W/500W Submersible Fish Tank Heater with Dual Temp Displays and External Intelligent LED Digital Temperature Controller Show Instant Temperature and Set Temperature : Amazon.co.uk: Pet Supplies
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AQQA 500W Aquarium Heater,Submersible Fish Tank Heater with External Digital Temperature Controller,Fast Heating Heater for Aquarium Fish Tank for 250-550L : Amazon.co.uk: Pet Supplies
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