Review on 🌡️ Marina 11202: Precise Fahrenheit and Celsius Standing Thermometer for Aquarium by Jenn Simmons

It sinks I wanted this with Bob in enough water/tank to reach your fingers so you don't get your hands wet. got is the one that sinks to the bottom and bounces and spins so you can't see the temp. Then you have to wet your hand to get back in position to read it. In general, the sensor is difficult to read due to the refraction of light in water and glass. Great for a 1 gallon bowl but not so good for a large aquarium.