Fluval Nano Aquarium Heater 25watt

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  • Shatterproof
  • Preset temperature of 76-78° F
  • Slim, Compact Design

If you're looking for an easy to use heater for your betta or nano tank - the Fluval P25 heater is a great choice. It is fully waterproof and is designed to be completely shatterproof as well which keeps both your tank and livestock safe. Because it is compact and doesn't take up much room, it is easily positioned to fit almost anywhere in the aquarium. 

The Fluval P25 heater is intended for use on tanks 6 gallons and under. It is preset to maintain a temperature of approximately 76-78° F. When the heater is running, the led indicator on the front will light up.

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Customer Reviews

Based on 60 reviews
Dan (Poulsbo, WA, US)
Good for a year

I have had two of these heaters. One failed at about 8 months. The second has now failed at approximately 1 year. I love the heaters when they're working. Small compact, durable,and easy to set up with no adjustment required.

Sehar A.A. (Smiths Station, AL, US)
Working well

I got this heater after returning few heaters for my 2.5 gallon tank. It works well and doesnt take too much time for the tank to be of same temp. I am hoping I would be able to use this heater for a longer duration.

Vanessafay C. (Washington, PA, US)
Best little heater

It's really hard to find a good and safe heater for a small 5 gal. that wont cook the fish or do pretty much nothing. This heater does all it's expected to do. I love not having to worry about the issues the wrong heater can have on my tank and fish.

Em (Seattle, WA, US)
Small, reliable

Small, reliable, nice profile in a rimless tank.

Colby M. (Chicago, IL, US)
Great heater

I got this heater for my office 5 gallon. The building/office is extra cold during the winter, so I went one size up. I like that this model has an indicator light showing when it's on and heating. A couple weeks in and the temperature is still perfect.