Recommended heaters for 2.5 mini bow?

[Juditko]

Can I get one this small that is adjustable as recommended here in other threads? Right now Fish has a zoo med under gravel and it's working fine. I read love/hate relationships on the tetra 2-15 gal heater. I want to get another heater to either have on hand or use. Whatever I have extra I will use to make water changes easier. Is there something I could buy now that would also work later with a five or ten gallon in case we upgrade?

[Juditko]

Sorry I didn't mean to post twice!

[LadyVictorian]

I have a 5 watt heater by Tetra that works ell only you can only have the heat set to 76.

[shinitakin]

I have the adjustable Hydor Mini Heater 25W, and it really works great! I have it attached sideways to the back wall of my Minibow and the cord just hangs out from the same area that the filter's cord uses. If you'd like to be able to reach the temp adjusting knob, you can also attach it to the back vertically with the suction cups. Just make sure the heater is low enough that it won't prevent your lid from being fully closed!

[aemaki09]

I dont have an adjustable, but I got the 7.5w betta sticks on amazonand they work amazingly, plus they are cheap -- like $5 plus shipping.
I also recommend marina mini betta heater - again not adjustable but nice heaters.
You caan also use 25w heaters, but I'm terrified of using something that can heat up a 10 gallon in a 2.5 lol

[Juditko]

Just ordered a hydor theo 25w off amazon based on all the threads I've read. Should be just about set now!

[Juditko]

Specs on theo read 2-7 gallons so I think we're ok.

[aemaki09]

Goodluck with it! I just got my 100w hydor theo in the mail today! Nothing but good reviews on it. And I needed something that wouldnt break everytime I accidntly ran it out of water lol
They are very nice heaters from what I've heard, and the one I have is working well already, at the temp I set it to exactly.