Adjustable heater for small bowl?

[dorymomory]

I have a 1 gallon bowl for my betta right now (I'm thinking I'll upgrade to something bigger once I move house and have more room). I have a small heater at the moment, but it's not adjustable, it's old, and lately it's been heating the water a bit hotter than I'd like at random times so I really have to keep an eye on it.

In the meantime before I upgrade, I'd like to get a more reliable heater. I've been looking around and I can't seem to find anything that will work in my size of bowl that is also adjustable. Does anyone know of a brand/product that would work well?

Thanks for your help!

[Olympia]

This is the most recommended heater on this site..
http://www.amazon.com/gp/aw/d/B00106X8QG
It sets preset, but I'm pretty sure you can adjust it.. You can buy it on amazon, I've seen it in smaller local pet shops but not in pet smart.

[Tobythefish]

I don't know about an adjustable one for a 1 gallon, but when you upgrade, a hydor theo 25 W is great. It's adjustable, $20 on amazon, and heats 2-7 gallons. If you buy $25 or more of products from amazon you get free shipping too. I've had it for 2 weeks now, and I love it. I have it set at 79 degrees and it stays there except on warm days(sort of having early spring here). On warm days it keeps it at 81 degrees. I read all the reviews for it on amazon(there were about 40) and the only trouble some people had was that it wouldn't adjust. Most of the reviews were 4 or 5 stars. Some other heaters they sell on amazon have bad reviews such as leaking heaters, exploding heaters, and heaters that boiled fish(100 degrees or so). I know its a bit pricey, but very well worth your money. I was told here that Fluval was the best, with Hydor and Eheim Jager next best. Sorry for the long post, hope I helped.