Review on 🐠 Cobalt Aquatics Neo-Therm Pro Aquarium Heaters (Available in Multiple Sizes) - Advanced Dual Display, Fully-Submersible, Shatterproof Design, Precise Thermostat by Seth Heck

. Hold and regulate temperature like a pro! **** UPDATE March 20, 2019 ***** Heater still works and works great! Highly recommend for anyone looking for a safe, quality heater for a 2 to 6 gallon aquarium! *************** So far, so good. I've had a clinical thermometer for a week. I have a 3.5 gallon 360* tank. I set the temperature to 76*, it fluctuates between 76.4 and 77 depending on the water flow from the aeroston and the ambient temperature in the room. Super easy setup - you just set the desired water temperature and it will flash amber until the desired temperature is reached. Today it dropped to 75.6 but I kept the windows open all night and the room was cool. The thermometer activated until it read 76 again. My fish, Clark loves it and I love that it's so thin, I add a side shot. My ONLY complaint; totally superficial. I don't want the writing on the front to be white. it doesn't mix well in my aquarium. But then my tank is smaller and it might not be as obvious in a big tank. I know this thermometer is expensive, but it's worth it. I am very worried and carefully studied the filters before choosing. I feel completely comfortable with that. UPDATE: It is now January 2018 - this heater is still working. Works perfectly. Just make sure you turn it off for 15 minutes during a water change if the thermometer is exposed to air. After filling with new water. Turn back on. The previous temperature setting must be observed! Highly recommended! Keeps the water at the right temperature. Adjusts itself as needed to maintain the set temperature!