Cobalt AquaticsNeo-Therm Pro Aquarium Heater, Made in Poland, Fish Tank Heater for Freshwater or Saltwater Tanks, Turtle Tank Heater, Submersible, Auto Shutoff, Temperature Controller Thermostat 150W

Loved all the features and small design about this. Great display, easy to set, temperature stability.. Except, it broke within 2 weeks. Thankfully, I use a separate temperature gauge to check and had a old emergency heater in the cupboard.

This Cobalt heater has a very small footprint and the accuracy is superb. I said it at 78° f and when I test it using a Hannah temperature probe it is reading 77.9° f consistently overnight. In the middle of the afternoon after the lights have been on for around 5 hours the temperature will go up to around 78.3 and hold. I'm only giving it a three-star rating in value for your money because this heater is damn expensive but it's money well spent if you want to keep your reef tank at a constant stable temperature. The cable is nice and flexible and the brackets is well designed. There's one other company that makes this style of heater and it is twice as long as the Cobalt and is nowhere near precise, and customer service for that other brand is non-existent. All in all you can't go wrong with this specific heater and being electronic it picks up temperature changes very quickly especially if you add room temperature water to your sump the units will start flashing and heat itself up. The seller was great and replied in reasonable time and the heater arrived before it's set date which was a bonus.

It works! And it is very sturdy! Easy to use! Would have no hesitation in recommending this product to other pet fish keepers.

Muy buen producto, ya que los calentadores de acuario generalmente están hechos de cristal, lo cual los hace fragil al impacto. Este calentador está hecho de un material a prueba de impacto, lo cual, dependiendo de tus necesidades, puede ser una mejor opción.Lo utilizo para el acuario de mi tortuga, la cual ha reventado calentadores de cristal. Hasta la fecha, el producto funciona sin contratiempos.La temperatura está expresada en Fahrenheit

LOOKS TERRIFIC, GREAT STYLE; LIGHTS CAME ON AND FLASHED ABOUT BUT IT DID NOT WORK AT ALL DESPITE NUMEROUS ATTEMPTS BE SEVERAL PERSONS!! THE TEMPERATURE NEVER CHANGED!!I WANT MY MONEY BACK!!!