Prevent temperature fluctuations by supplying heat to your aquarium using only the safest, most reliable aquarium heaters by Coral Vue, Azoo, Eheim, and JBJ. Because TB Aquatics makes sure that every item we sell has superb performance, we chose these fish tank heaters which are designed using the best available technology to ensure you are providing the right amount of heat in the safest way possible, every single time. No false readings! Expect fast heat transfer, accurate temperature measurement, and 100% safety. With these aquarium heaters, temperature fluctuations in your tank will be greatly minimized making your fishes stress-free and healthy.