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

[manami]

hello, my halfmoon/super delta? XD Edward turned 1 year on july 8. YAY!

I confess that my betta never had a heater on his 2.5 gallon quarium...but I'm a little worried since his aquarium is just 2.5 gallon and I don't want him to get cooked up...and I can't upgrade his tank for a bigger one.

I been looking at petsmart.com and saw the following:

http://www.petsmart.com/product/inde...=Aquarium+Size

http://www.petsmart.com/product/inde...&lmdn=SHOP+FOR

http://www.petsmart.com/product/inde...=Aquarium+Size

Has anyone tried these?
any good experience?

I have heard of the elite ones and hydor...but that's buying online and I don't want to buy it online.

please help me and thanks! :)

EDIT: oops, forgot to add:

http://www.petsmart.com/product/inde...uctId=11801485

[LebronTheBetta]

I have the 3rd one. But I bought the Hydor THEO online. I'm waiting for it... Don't buy the 3rd one. It doesn't really heat my tank... :(

[vilmarisv]

Stay away from pre-set heaters... you can't control the temperature and those are the ones that can overheat your tank.
First, you need a good thermometer to monitor your temp.
Then you need an adjustable heater that you will turn up or down depending on how cold your water is at room temp.
This is one I've used in a 2.5galon http://www.drsfostersmith.com/produc...8&pcatid=11368
It's rated for larger tanks but the thermometer will help you set it at the correct temp for you smaller tank.
Check out the size under "More Information" to make sure the one you select will fit in your tank.

[aokashi]

im using an adjustable one from ebay. it's pretty accurate :) keeping my 1 gallon cozy.

[KHarris89]

I've been wondering this too. I have a top fin 50w that's on it's last legs (worked perfect for what I was using it for), but since I don't have a 10 gallon tank just yet, I have no need for that high of a wattage. Need something smaller that works great, and I have no idea what to get lol

[aokashi]

Originally Posted by KHarris89

I've been wondering this too. I have a top fin 50w that's on it's last legs (worked perfect for what I was using it for), but since I don't have a 10 gallon tank just yet, I have no need for that high of a wattage. Need something smaller that works great, and I have no idea what to get lol

derailing.... but i loooooveeee your crowntail!

[Silverfang]

I had the aqueon one, it was the most powerful. Not a good thing. It got my poor boy up to 86. Then I yanked it. The trouble is they usually keep the water Xdegrees above room temp. If room temp is 80, then you get say 86, if it's 68, then it will only heat it to say 74.

I totally recommend the hydor theo 25W. It won't cook your boy, but you do have to use a thermometer (get a floating not a crappy strip one). IME the do not keep the temp exactly what the number on the dial is, usually say a degree or two off. BUT they do keep it at a stable temp. My boy enjoyed the last 6 months in 80-81 degree water.

[BeckyFish97]

I use this one in gandalfs tank, it was designed specifically for a 2.5 gal tank!

http://www.amazon.co.uk/SuperFish-Na...upplies_text_b

[deso]

Originally Posted by KHarris89

I've been wondering this too. I have a top fin 50w that's on it's last legs (worked perfect for what I was using it for), but since I don't have a 10 gallon tank just yet, I have no need for that high of a wattage. Need something smaller that works great, and I have no idea what to get lol

Actually, I have a 50w Hydor Theo in my 2-gallon Fluval Spec and it's been heating perfectly for the past month or two. We're having a rather cold summer here with the exception of a few days (highs in the mid-60s, lows in the low 50s), and I like my flat on the cold side. Keeps the temp at a steady 26.5 degrees celsius / a touch below 80 Fahrenheit. It was the online seller's error that they sent me the 50w instead of the 25w, but since it was during a cold snap, I had no choice but to make do with it.

My other heater was a non-adjustable 10w and was overheating the aquarium, despite being of a much lower wattage.

[manami]

Thanks everyone!

I guess I have to get the hydor theo 25w online...but I don't know where to buy it...amazon http://www.amazon.com/Hydor-THEO-Sub...ords=hydor+25w or http://www.drsfostersmith.com/produc...8&pcatid=11368 vilmarisv recommended.

But i'm confused...they look different on both websites.
Is one newer than the other?