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Amazon.com: AquaClear Marina Betta Fish 8W Submersible Heater - For Fish Tank Aquariums up to 1.5 US Gallons (5 L) : Pet Supplies
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Amazon.com: Penn-Plax Cascade Mini Fish Tank Heater – Fully Submersible – Great for Freshwater and Saltwater Aquariums – 4” Length – 10 Watt : Pet Supplies
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Amazon.com: Aqueon Small Aquarium Fish Tank Submersible Mini Flat Heater Up to 5 Gallon Aquariums, 10 Watts : Pet Supplies
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Amazon.com: Aqueon Small Aquarium Fish Tank Submersible Mini Flat Heater Up to 5 Gallon Aquariums, 10 Watts : Pet Supplies
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Amazon.com: AquaClear Marina Betta Fish 8W Submersible Heater - For Fish Tank Aquariums up to 1.5 US Gallons (5 L) : Pet Supplies
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