Help choosing a good tank that won't cook my betta?

[Kenny G]

I have gotten my heater from Petsmart. Its the Marina Betta 8w heater. I used it for weeks in my old 1.5 gallon tank and it worked like a dream. Just on a whim I decided to try it in my Aqueon 2.5 gallon mini bow tank instead of buying a new one. Much to my suprise it worked perfectly. Even though it is preset it kept the water at 80 degrees. I liked it so much 2 weeks ago I went back and brought a second one for my other 2.5 gallon tank. You might want try that. It's 10.99!!!!!!!!