Fish tank water heater contained in a fully submersible 2mm quartz shock-resistant glass tubeFeatures a precision protection circuit guards against excessive temperatures within the unitHeater guard protects pets from potential burnsCompact and easy to install in your aquariumSmall lamp indicates when the aquarium water heater is active
This heater does exactly what it is supposed to do. It maintains my turtle tank at just the right temps. I really like the way you can adjust the temps right on the heater itself (but still keep a thermometer in there and check it daily!) This item was cheaper than the other heaters, and personally I like it better.
The Sera heaters are very well designed and reasonably price. I like the fact that it is easy to determine whether you are raising or lowering the temp by the temp lettering on the front. This may sound obvious but Ive used some brands where the symbols made no sense and you could not easily determine what way to turn the dial. Also the heater guard is a huge plus if you have fish that could burn themselves by resting on it, like plecos and bichirs. It also protects it against large boisterous chiclids. Ive had no problems with mine not keeping temp or skyrocketing the temp. It has worked well for quite a long time now. Very happy to see Petco carrying this item. Very high quality product for a reasonable price.