I have a baby girl Betta and she has been far more active now that the water temperature level is more suited to her species. I have been using a timer with it as I am a little nervous about it getting too hot. I have been keeping a close eye and it seems she is happy anywhere from 75 - 80 degrees which I am working on managing via the timer. I did notice that when we were colder in the room and used a heater the tank heater did not adjust and balance (lack of an internal thermostat I guess) and so the water did reach 86 which she then seemed as lethargic as she had at 69 degrees. If you don't have the time or patience to deal with these sort of fluctuations there are small tank thermometers with internal thermostats set for about 77 degrees from what I have found. I may purchase one of those and keep this one as an emergency back up in case of future needs. Read full review
Verified purchase: Yes | Condition: New
This is designed to be a heater for a small Betta bowl it heated much too well. I bought it for my office Betta. it got up to 80 while I was in the office and would have been fine +- a couple degrees. But, overnight it got into the high 80's. Unfortunately my Betta was at a high temp too long and even after being unplugged and out of the tank my Betta passed away.
Verified purchase: Yes | Condition: Pre-owned
I am so happy that I chose this aquarium heater. I have two aquariums. My first aquarium is a two gallon size aquarium, with guppies and snails. My second aquarium is a mini desktop that I put my baby guppies in until they're a nice size to put back with the other guppy fish. So the baby guppies will not be eaten by the bigger guppy fish. Back to the heater. It's a nice size to fit inside my mini aquarium. Not taking up a lot of space. It took maybe two hours to heat up the water. I don't think that the heater can be adjusted or not. Shipping was really quick, just maybe two or three days. I am very impressed.
Verified purchase: Yes | Condition: New
I bought this for my 2 gal Betta tank. It holds the water temperature solidly in the ideal range for my Betta. It is small and the LED active light is not too bright and functional. I would recommend this heater for any small tank.
Verified purchase: Yes | Condition: New
this is a nice, compact heater that works great in a smaller aquarium. I like the thermostat control that is preset at 78* F, keeps my bettas warm and happy!
Verified purchase: Yes | Condition: New
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