what's the best heater for a 20 gallon tank? : r/Aquariums
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HiTauing 200W/300W/500W Submersible Aquarium Heater for 20-130 Gallon - Upgraded Double Quartz Tubes Fish Tank Heater with HD Temperature Digital Display - Suitable for Freshwater and Saltwater : Amazon.ca: Pet Supplies
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3 Best small aquarium heaters for tiny tanks 1 - 10 gallons
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Best affordable heater for 10-20 gallon tank? : r/Aquariums
Best Aquarium Heater for 20 Gallon Tanks
3 Best small aquarium heaters for tiny tanks 1 - 10 gallons
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3 Best small aquarium heaters for tiny tanks 1 - 10 gallons
What do you recommend for a heater for a 20 gal? I got the aquarium kit from PetSmart but have read that the heaters suck/ are unreliable… and would rather not come
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