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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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AQQA Small Aquarium Heater 15W/25W/50W/75W/100W Submersible Fish Tank Heater with Intelligent LED Temperature Display and External Temperature Controller for Betta Fish Tank and Turtle Tank 15W (for 1-5 gallon)
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ZEETOON 25W Aquarium Heater, Automatic Thermostat Betta Fish Tank Heaters, Tortoise Small Water Warmer for 2-5 Gallon Container with 1 Stick-on Thermometer Strip : Amazon.ca: Pet Supplies
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DaToo 25W Mini Aquarium Heater Betta Small Fish Tank Heater Submersible 3 to 5 Gallon, 1 Yr Warranty : Amazon.ca: Pet Supplies
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KollerCraft 5-Gallon Aquarium Kit with LED Lighting and Power Filter, Ideal for a Variety of Tropical Fish - Walmart.com
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Betta Fish Tank Heater, 25W Mini Aquarium Heaters with 2 Artificial Plants 1 Stick-on Thermometer Strip Energy-efficient Water Warmer Temperature Controller Smart Thermostat for 3-5 Gallon Tank Black
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Betta keeping checklist: 5+ gallon aquarium ? ✔️ heater? ✔️ filter? ✔️ lawn flamingos? ✔️ : r/bettafish
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