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Review on SZELAM Submersible Aquarium Temperature Controller by Kevin Taharka

Revainrating 5 out of 5

This is the small aquarium thermometer you are looking for!

I dared this thermometer and was NOT disappointed! It works exactly as expected in my 3 gallon betta tank. I set the temp and it came up to temp and HOLDS the water at that temp. I have an analog thermometer on a suction cup in the front opposite corner, as far away from it as possible, and the temperature it registers is worth the money. I'll most likely be getting another one for my kids' aquariums as winter approaches to keep their fish friends warm.

Pros
  • External temperature touch controller. It is very easy to adjust the temperature with an external touch controller without taking the heater out of the water, much safer than before. And the dual real-time temperature display on the heating element and external controller makes it easy to monitor the water temperature.
Cons
  • Questionable purchase for the elderly