GOOD HEATER, except...

Should have option to turn LED numeric temperature reading on or off. Celsius 'only' reading is alright because it's metric and probably more scientifically accurate. Could have Fahrenheit option. Sometimes you might not like the bright red digital numbers glaring out at you and your fish! Other times, it's cool to have on and see the red numbers brightly lit. Yes, it does maintain proper temperature and will even let you know when temperature exceeds the thermostat temperature you set. Manufacturer likely didn't design this LED on/off option to keep you continuously informed of water temperature. Many aquarium owners have a separate water thermometer other than relying on the heater reading. If you don't have a separate temperature indicator/thermometer other than just the heater reading, HURRY UP and GO GET ONE! They are inexpensive. This is a GOOD heater, not as small as you think, and the LED on/off issue.

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