DaToo Small Aquarium Heater 50W Mini Fish Tank Heater 50 Watt Submersible with LED Temperature Display

Good heater that actually works and you can adjust with a good price, sometimes it goes over the preferred temperature but if u set it to 79 or 78f it's not gonna cook your fish 👍

Moderately priced fish bowl heater, but its adjustable, unlike most. Just perfect for a 3 gallon tank, my fish loves it. Quick and easy to setup, just click the adjustment button until your dedired setting. I keep mine set for 77 degrees. I have mine for a week, hopefully it lasts as long as my previous one 👌

You don't just press set to set the temperature like the directions say. you have to long press it multiple times until you set it like a clock by choosing the number you want. its only day one but the heater is working and its reading the same as my thermometer so far

I wanted a small beta tank heater that had a specific temperature setting and not one of those other compact models that simply warms the water a few degrees above your room's temperature. This heater actually allows you to set a temperature, and it only starts heating when necessary. There's a little red light that indicates it is warming, and the display always shows the current temperture. Then, it turns off when it maintains a desired temperature. It is very compact and able to warm my 3 gallon beta tank very easily and effeciently.

Works exactly as it says. I've tested the temp reading with a separate thermometer and it's accurate. only drawback is how thick the cord is.

I really like this heater. It's adjustable and visible in the tank. If I need another, I'd buy this one