Orlushy 25W Small Submersible Aquarium Heater, Constant Temperature Betta Fish Tank Heater of 78℉for 1-6 Gallons Freshwater & Saltwater Tanks
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Availability:
In Stock.
Arrives
Monday, Sep 8
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Pattern Name: 25W
Features
- 25W Aquarium HeaterOrlushy 25w fish tank heater can be applicable to 1-6 gallons tank. It is 4.7 inches in length, ideal for use in low water level and wont take up mech place, easy to hide in small tank. Please fully submerged the heater vertically into water in fish tank, and horizontally into water in turtle tanks.
- Easy to Operate This aquarium heater is automatic constant temperature heating when the power is switched on. The preset temperature is 78F. Accuracy is 3F. Stair shape heating that red light is on and heater starts to intermittently heat the water to the preset temp, saving energy and electricity. When green light is on, heater stops working and maintains constantly 78F.
- Durable & Material The durable material of the heater ensures safe operation. The outer shell covering the whole body of the heater is made of heat-resistant ABS material that it wont deform and melt under high temperature. The heating rod is made of nickel-chromium heating wire to faster heating rate, and non-corrosive quartz glass.
- Cautions 1.Please ensure the heater is 100% submerged into the water before plug in the power. 2. Please unplug the power and cool down the heater for 10-20 minutes before taking it out to clean the fish tanks or change the water.
- Guaranteed Customer Service Orlushy fish tank heater is made with great safety and durability for use. We guarantee 1 -Year warranty. If there is any issue with our product, please contact us, and we would gladly offer you after-sales service.
Package Dimensions : 5.55 x 3.62 x 1.73 inches; 3.53 ounces
Item model number : CN25W
Date First Available : August 28, 2022
Manufacturer : Orlushy
Best Sellers Rank: #1,550 in Pet Supplies (See Top 100 in Pet Supplies) #1 in Aquarium Heaters
#1 in Aquarium Heaters:
Customer Reviews: 4.3 4.3 out of 5 stars 23,775 ratings
Item Weight: 3.52 ounces
Manufacturer: Orlushy
Item model number: CN25W
Date First Available: August 28, 2022
Item Package Dimensions L x W x H: 5.55 x 3.62 x 1.73 inches
Brand Name: Orlushy
Target Audience Keyword: fish
Size: 25W
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Sep 8
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Pattern Name: 25W
Had to get a heater asap when i noticed my betta was suffering from bloat because his water was too cold. This heater is great! Doesnt over heat and comes with a temperture sticker. Its small and fits perfect in smaller tanks. Makes 0 noise of course. Has been working for a few months for me with no issues. Easy to put in the tank. I have a 3.7 gal tank and it hehats up nicely and evenly.
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Reviewed in the United States on July 26, 2025 by Jezii S
Pattern Name: 500W
I recently purchased the Orlushy Submersible Aquarium Heater, and it has exceeded all my expectations. As an avid aquarist with both freshwater and saltwater tanks, finding a reliable heater that works well in both environments has been a challenge. This heater, however, has proven to be a fantastic solution. Precise Temperature Control: The adjustable knob thermostat allows for precise temperature settings, ensuring that my tank stays at the perfect temperature for my fish. The included thermometer is a great bonus, making it easy to monitor the water temperature accurately. Powerful and Efficient: With its 500W power, this heater is capable of maintaining a stable temperature even in larger tanks. I have a 75-gallon tank, and it heats the water quickly and efficiently. The heater’s performance has been consistent, providing a stable environment for my fish. Durable and Well-Constructed: The build quality of this heater is impressive. It feels sturdy and well-made, and the suction cups hold it securely in place. I appreciate the durable construction, which gives me confidence that it will last for a long time. Versatile and Reliable: This heater is suitable for both marine saltwater and freshwater tanks, making it a versatile choice for any aquarist. I’ve used it in both types of tanks, and it has performed flawlessly in each. The heater maintains a consistent temperature, which is crucial for the health and well-being of my fish. Easy to Use: Setting up the heater was straightforward, and the adjustable knob makes it simple to set the desired temperature. The heater’s design allows for easy placement in the tank, and the included suction cups ensure it stays in place. Great Value: Considering its performance and features, this heater offers excellent value for the price. It’s an affordable option that doesn’t compromise on quality or reliability. In conclusion, the Orlushy Submersible Aquarium Heater is a top-notch product that I highly recommend to any aquarist. Its precise temperature control, powerful heating capability, and durable construction make it an excellent choice for both freshwater and saltwater tanks. If you’re looking for a reliable and efficient heater, this one is definitely worth considering!
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Reviewed in the United States on July 16, 2024 by Tino Bruno Tino Bruno
Pattern Name: 25W
Great heater. I use in winter in my dogs outdoor water bucket. No frozen water. Yes I know it's for a fish tank but great for dogs who don't chew on everything.
Reviewed in the United States on June 29, 2025 by Elisabeth schaaf
Pattern Name: 100W
I purchased this heater as a replacement since my last heater finally gave out. The heater itself does its job, it heats the water to temp and keeps it somewhat to where it’s set. It was a great addition having the temp probe and digital readout. I have tested it against another heater’s internal control and mercury thermometer and it seems to be mostly accurate. My only issue, and reason for giving this thermometer a four star review, is because the temperature dial on the top of the heater, are the ONLY temperatures you may choose to heat your aquarium. It is not variable, or adjustable. I found if I set the heater to 75, the tank would sit around 72, and if set to 79, it will stay at 79. The seven degree swing seemed rather large IMO. Like I said, the temp is not variable, and if the selector on the heater is not lined up with a number, the heater will not turn on at all or heat the aquarium. All in all it does its job, but if you want variability when selecting a temperature, spend a little extra money and buy a heater with that option.
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Reviewed in the United States on February 15, 2025 by Leon Office Leon Office
Pattern Name: 25W
Works well even though I turned it on before the water was added and it partially melted the heat cover. I should read the directions first. My problem, but glad it still works well.
Reviewed in the United States on May 22, 2025 by Mona
Pattern Name: 500W
I've had this heater now for about 5 months. It's been working great. It took a few days for it to adjust in my 65 gallon tank. The temperature was about 5-7 degrees off at first but then it became more accurate. I'm not sure why. I always use two thermometers just in case. I have it set at 79 and the tank is at 80 which is good to me. I've used many heaters like this and I've never had one be exact. It's easy to adjust with one hand and the temp is always where I want it to be. The suction cups are strong. Just make sure you don't put one on the heating element. The lowest one should be in the middle, in line with the indicator light, just above the coils and the second one should be all the way at the top. This will still provide stability (unless you have big fish that might knock it around) and prevent the cup from warping. There's a rubber foot at the bottom of the heater that keeps it from tapping the glass. The demonstration video shows it wrong! The digital thermometer also seems to work well but I stopped using it because I just prefer glass thermometers. I tested it with two glass thermometers and it matched consistently for 4 months. I'll be using it for acclimating or moving fish. I would recommend this thermometer for anyone and add to just make sure the suction cups are positioned correctly and always try to test your heaters without fish first if you can.
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Reviewed in the United States on August 31, 2022 by stinky
Pattern Name: 25W
Seems to work great for my 6.5 gallon. Love how small it is and the all black looks sleek and modern! Easy to use and works great!
Reviewed in the United States on July 11, 2025 by Amara Van Doughty
Pattern Name: 100W
Heater is great but the thermometer stopped working after 2 months
Reviewed in the United States on April 6, 2025 by Coral