Originally Posted by Adastra
I don't use non-adjustable heaters--they are unreliable, and if the ambient temperature of the room is low, around 70-72 degrees, they won't heat the water enough, if the room is 78-80 degrees, it will overheat the water. I only recommend heaters that have an adjustable temperature dial--they are a few dollars more, but I believe it is worth the investment. After all it is a higher quality product that will last longer and will provide you with more security, stability, and control. If you have some other supplies you want to order, you could save a ton of money by ordering your heater and other products online.
I use and recommend these--as you can see, the 25 watt is quite reasonably priced: http://www.fosterandsmithaquatics.co...8&pcatid=11368
I have seen these in pet stores for as much as $27, so what you save more than makes up for the cost of shipping. If you order a few more items, you'll save even more.
I 100% agree with Adastra - adjustable is the way to go, IMO/E.
I have two Jebo adjustable, fully submersible 25 watt heaters purchased on Ebay and even though Jebo is not a "name" brand, per se, they have worked FLAWLESSLY!!! Total in the door was $15.49 ($9.50 for the heater & 5.99 shipping) and shipping was FAST!!!
Have posted the link before, but will do so again (and, yes, this is the seller I got the heaters from):
Good heaters at a good price with good customer service - can't beat it, IMO!