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Your cart is empty. Aquatic 15 Watt Flat Heaters provide warmth for small tropical fish and are designed for glass or acrylic desktop aquariums 4 gallons to 10 gallons. They are completely submersible, easy to install and efficiently warm aquarium water. Suctions cups are included so you can mount the heater to the bottom or side wall of the aquarium. Be sure to choose the appropriate size for your aquarium. Do not operate or leave product plugged in when it is outside of water.
Aqueon products offers a wide range of items so that you can build and maintain a healthy aquatic environment. All the essentials from fish tanks, filters, lighting, food, care, and other supplies that your pet fish needs. We make it easy for you to get your first aquarium and to grow in the hobby as you become more of a fish expert with every step you take and every new thing you learn. For those seasoned hobbyists, we are committed to aquarium product innovation so that we continue to offer products that get you excited. With the Aqueon brand, it's all about the fish.
Avery
Reviewed in the United States on August 14, 2024
From time to time the heater would turn off and id find my betta fish cold but when it was working it was the perfect temp and i felt i had nothing to worry about. So its intermediate with warming but still recommend just keep an eye on it !
JesseS
Reviewed in the United States on December 9, 2024
I bought this Sept 1st and my window to return to Amazon is gone n the 90day warranty is now technically gone! So ticked! It almost fried my snails! They were all at the top trying to get out of the water! Even my baby snails were trying to get out of their floating tank!This was used in my Aqueon 5.5gallon tank n today I saw the temp 85° now I checked this listing n it doesn't give temp ranges, there's no need for it to be that high!I've just started fish n snail keeping this yr, again been a couple decades, n I thought Aqueon was a premiere brand n I collected 3 tanks worth of Aqueon products along w all the liquids! Smh I get that some things aren't gonna last a lifetime, but I didn't think it would misbehave just 7days past their 90 day guarantee smh the picture attached is when it started to cool down! I guess u get what u paid for. I just would've rather had the heater turn off, not try to fry my snails!
KT
Reviewed in Canada on April 22, 2024
It's massive for something meant for a small tank.It's way to hot (and no way to turn it down) for a small tank.This will likely kill your fish as I test water temp. It ranges fluctuate by 6 degrees Fahrenheit the worst Ive seen I assume it gets worse if I kept a closer watch. BUY ANYTHING ELSE. SELLER STOP SELLING THIS TRASH TO PEOPLE
Kady
Reviewed in the United States on March 24, 2023
I've purchased this style and brand before. After almost 3yrs it wasnt keeping this 5.5 gal warm enough anymore. This new one seems to be working well. My betta, Pennywise, seems happier and much more active. I currently use this same brand flat style heater (different sizes/wattages) in both my other tanks... a 10 gal and a 2.75 gal. Those are both about 3yrs old too but still seem to be working and heating just fine. I will continue to monitor them all.
Shae Krause
Reviewed in the United States on March 14, 2023
I have purchased this filter twice. The first time the heater stopped working, but the second one is doing great. It is very consistent and does what it is supposed to. It was bigger than I was expecting for some reason but it still fits well in my tank. I will probably repurchase this item if/when my current one stops working.
Krystal
Reviewed in the United States on February 1, 2023
Perfect for my betta. I would say this more or less maintains the temperature. I have a 5 gallon tank, it raised the temp 4 degrees (from 73 to 77) and now it basically just maintaining that temp, but it isn't going up any more (which is perfect for me). No temperature control, no shutoff. Bare minimum but great for the price and works.
Sam03
Reviewed in the United States on October 22, 2023
I have a female half-moon betta in a ten gallon tank. Her tank doesn't get super cold, but I was just looking to keep it up to temp in the fall and winter months. Ambient heat seemed perfect. First off, the package says it's 15W, but only up to a 5-6 gallon tank, but this advertisement says it's up to ten gallon. I cannot forsee anyone using this heater in a smaller tank. It's fairly large and would take up most of your tank. I do like it for my ten gallon. It's flat and you cannot see it. It's much more pleasing to the eye than my last heater. The one issue I had was I had it plugged in and my heat tape showed her water was well over 82 degrees and climbing. I unplugged it right away. It did not shut off automatically as it was supposed to. I think it's a great heater, but you do need to really keep an eye on it or you'll cook your fish. Totally not a good heater for anything below 5 gallons.
Curwin
Reviewed in the United States on July 15, 2022
It does a great job...of getting the temp to 80 degrees, in my environment. I placed it in a 20 qt. clear tote I bought at Walmart, filled with treated water, next morning 80 degrees. I keep my a/c at 77 degrees( here in south Texas that's cool), and the ambient temp of that tote full of water at room temp was 72 degrees, for three days until I added the heater and it went to 80. That's 2 degrees hotter than I keep my tanks so these heaters are useless to me, but they're in perfect order so I'll eat the loss and maybe try to sell them. Other than that they are great little heaters if you need the water at 80 degrees.
M Ryan
Reviewed in Canada on March 1, 2022
I liked the form factor - thin and flat, but was disappointed in that it does not have or maintain a preset temperature. My bad for not reading the product description. Comes in sealed hard plastic that must be cut to open, so i didn't return it. Rather kept is as an emergency backup.
J.Smith
Reviewed in Canada on September 19, 2021
I have a Fluval Edge, they are 6 gallons, and this heater didn’t work from day one.Give this one a miss.
Leslie
Reviewed in Canada on June 26, 2020
I found the heater is pretty big for any tank smaller than 10g. Other than that, it works well. I use it for my 6g tank and it keeps the temp around 27-29C, which is quite high. I might only use it at night or in the winter.
Mary-Jane
Reviewed in Canada on June 2, 2020
I didn't have a problem with their smaller heater (for a 3 gallon tank) got the bigger one for my 10 gal. Didn't work! It seems to be warm... Just can't keep my tank warm. I put the smaller heater in and my temp is already climbing...
MHbus
Reviewed in the United States on March 9, 2020
I have this aquarium: https://amzn.to/2Q1wjiTIt's 3 gallons, I previously had a smaller aqueon heater, but I was getting a better fish and so i wanted one that made it warmer. if you're researching aquarium heaters, you probably ran into the same problem that I did. I was looking for an adjustable heater that wasn't too big, had good reviews on amazon (so many listings i read had the same problem listed on multiple reviews), and was 25 watts or lower.I bought another heater before I bought this heater. That heater had problems. The cord was too short, and the heater was way longer than the image on the amazon listing made it look. Also the knob was bright and stood out. So it was unusable and I returned it.If you buy this heater, you need to know that it _isn't_ adjustable. Furthermore, I dont believe that it's even preset at a specific temperature. Basically what this heater does is it's going to raise your water temper a certain amount of degrees above whatever the ambient temperature is. So how much warmer it makes it is going to depend on what the temperature in your house is an how much water you have.My house is usually 70 and this has the temp at 76-78 which is just where I wanted it for my betta fish.So that's my experience. If you're looking to heat up a similar amount of water to a similar amount of heat, this is the heater to get.Also, I like how this is a long black flat plate. I have it hidden behind my plants and I can't even see it which is a huge plus after I had looked at other heaters that had the problem of being too big, ugly, or having light up LEDs
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