What size aquarium heater should I use for a 5 gallon tank?

I am setting up a tank for a betta fish, and need to keep the aquarium at 80 degrees Fahrenheit. How much wattage would I need to keep this temperature in a 5 gallon tank?

25 watts is best

Edenpure Heater Service

Posted in Aquarium Heaters

4 Responses to “What size aquarium heater should I use for a 5 gallon tank?”

  1. QueenXxJiT says:
    December 9, 2009 at 11:57 pm

    just put it on the stove on low.
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  2. Clown Keeper says:
    December 10, 2009 at 12:21 am

    25 watts is best
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  3. Mary says:
    December 10, 2009 at 1:06 am

    i would think a 25 watt heater.but ask a petco worker or a vet.
    but a 25 watt heater should work.
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  4. oklahoma says:
    December 10, 2009 at 1:30 am

    d
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