Submersible Aquarium Heater by Fluval Marina - Perfect for Maintaining Tank Temperature

J.M.: I have used this same product in my 20 gal long tank for 3 + years and it is still working strong. That is why I bought this same one for another tank I have. Plus turning the temp díal and you can see clearly the red indiçator in front to show what approximate temp you want to set it in is a plus. I also like Aqueon heaters and they last long for me as well but you can not really see the temp iñdicator because it is on top near the dial compared to this one. So the advantage for me is the red indicator scale that shows in front makes it easier for me to see what I set it to. Also I use a temp gauge in the tank to make sure I get the temp the way I want it after I set the heater temp.

United States on Dec 21, 2023

Wendy Flores: This product is great for the value easy to use and the quality is great I use these in multiple tanks but just as any heater may need to replace after a year if you get a defective one only happened to me once other than that I've had them for several years and they are amazing and easy to use

United States on Nov 18, 2023

Pamela E: It runs a little warm but overall works. Keep an eye on the water temp as it can climb beyond what you set it at.

Canada on Mar 27, 2023

Berteau: Je n’ai aucun problème avec ce produit il est très bien

France on Feb 24, 2023

Daniel Silva: Optimo. Não falha.

Spain on Jul 26, 2021

Alexis M. Moeller: I bought this to replace a similar heater that lasted about 5 years. It works great and maintains the heat in my 55 gallon tank well. Only had it a short while, but so far so good.

United States on Apr 23, 2020

tikeko: 5yr warranty

United Kingdom on Mar 01, 2020

Desiree: Does a great job. Keeps the water at the exact temperature. My fish couldn’t be happier, well maybe if I knew how to clean the tank... but the beater is perfect, and a wonderful price!

Canada on Jan 06, 2019

Tara Ridd: I've had a few heaters for fish tanks in my time, though by no means a lot. These have been my favorite so far. They're inexpensive, adjustable (in my home they can heat between a 5 gallon to a 20 comfortably with the adjustments), and pretty consistent in regards to temperature/regulating temperature. I currently have two bettas, each in a 10 gallon with one snail, and keep the temperature right around 76 F all the time. I did have one go out on me after owning it for six months, but I had just moved and it simply got squished in my car since I was trying to get the fish relocated as quickly and comfortably as possible. I ordered the exact same heater to replace it.

Short version: good, reliable heater for a fair price.

United States on Nov 26, 2016

Sarah Brigham: I got this heater in August 2015 for a 10 gallon betta tank. It's still running and keeping the tank nice and warm, even in the cold winter! I think that over time, it starts getting a little warmer, but only by a degree or two. The temperature setting on the heater definitely isn't 100% accurate, and I have to have it set a little lower than the temperature I want- but once you know it's a little off, it's easy to just set the temperature a few degrees lower. Overall it's been a really good heater and I haven't had any serious problems. I also have it fully submerged and horizontal in my tank. I've even seen my snails climb on it and eat algae off it it before, too.

United States on Feb 15, 2016