Creates accurate readings within 0.1 degrees. Equipped with a long-lasting LR44 battery. Includes suction cups to attach the unit to the outside of a tank and a probe to submerge into the water.
Reports of the battery on/off button being faulty, so the battery runs constantly.
No electronics; it's weighted at the bottom and reads the temperature in real-time. Suction cups keep it floating in 1 place. It measures from 30-120 degrees, depending on the tank and needs.
It's fragile, so watch how you use it.
Sticks on the outside of the aquarium glass to prevent water infiltration. Features buttons to set high- and low-temperature warnings. Easy to operate. Big number displays. Includes 2 batteries.
Not very accurate when used on acrylic aquariums.
This model sits in your aquarium and displays the water temperature and the room temperature at all times. It works in salt and freshwater tanks. No setups, great for kids who own fish.
The displayed temperature has a large margin for error.
It's an ideal heater for small tanks. You can place it vertically or horizontally, depending on your setup. Light indicators let you know the basic information.
Some had issues with tanks close to the maximum stated size.
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