Cobalt Aquatics 5-Watt Mini-Therm Electronic Heaters for Aquarium

I like this little heater. It didn't have any reviews so I took a chance on it. A couple of the other slim or mini heaters tend to keep my betta bowls too warm.

The cobalt mini 5 watt is keeping my one gallon bowl at a steady 78 degrees. IT has been in service for 3 weeks. I live in Texas and my house's ambient temp in this time of year is about 71.

Its just an awesome little heater for glass and acrylic aquariums from one gallon to 5 gallon aquariums not recommended for 10 gallons and up, you might need something stronger than 5 watts.

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This heater is perfect for a one gallon tank! I had a 7.5 watt heater that I had to keep unplugging because the water was getting too hot. With the 5 watt heater, no worries and no over heating. Temp stays at 78 to 82 degrees. Could not find anything like this heater at stores.

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