Vibrant Life 25 Watts Aquarium Heater

I haven't used this one yet, but I have one in my other tank already. It is super consistent in my 6g tank. I keep he water at 79F for my betta. Despite occasional house temperature swings it stays steady. This brand usually lasts me at least 2 years or more. Other brands were more expensive and shorted out much faster, or did temperature swings. I like that it is fully adjustable. It's nice to be able to make the water warmer for sick tropical fish. Turning up the temperature can also help battle ick breakouts in tanks. It's a trustworthy brand to have on hand. Still always be cautious and checking the tank temp everyday twice a day to ensure it's working.

Works amazing on my 3 gallon tank, keeps the right temperature and completely submersible.

It's exactly what I needed that I could not find at other retailers. It looks like it's great quality and the instructions make it easy to use.

My betta Sashimi loves the tropical water temp. It worked fast and is awesome at keeping the temp! Easy to setup as well!

The heater itself is good, although I have not tested it yet. I bought it for a 2.5 gallon aquarium... The listing said it's good for up to 5 gallons, but the size of the heater is a lot bigger than I anticipated. The product itself is fine though. I just need a smaller size.

Never turned on and does not work

I ❤️ it. Keeps good water temperature.

i left it in my tank for a whole 24 hours and it never heated the tank. Definitely returning this

Works great and was better than expected.

Very easy install and has been working great for weeks when the other one I had stopped working.