--- product_id: 476131076 title: "Orlushy 25W Small Submersible Aquarium Heater, Constant Temperature Betta Fish Tank Heater of 78℉for 1-6 Gallons Freshwater & Saltwater Tanks" brand: "orlushy" price: "VT5518" currency: VUV in_stock: true reviews_count: 13 category: "Orlushy" url: https://www.desertcart.vu/products/476131076-orlushy-25w-small-submersible-aquarium-heater-constant-temperature-betta-fish store_origin: VU region: Vanuatu --- # Submersible for 1-6 gallon tanks Compact 4.7-inch size fits small tanks 25W power for rapid heating Orlushy 25W Small Submersible Aquarium Heater, Constant Temperature Betta Fish Tank Heater of 78℉for 1-6 Gallons Freshwater & Saltwater Tanks **Brand:** orlushy **Price:** VT5518 **Availability:** ✅ In Stock ## Summary > 🐠 Keep your betta cozy and your tank flawless — warmth that works as hard as you do! ## Quick Answers - **What is this?** Orlushy 25W Small Submersible Aquarium Heater, Constant Temperature Betta Fish Tank Heater of 78℉for 1-6 Gallons Freshwater & Saltwater Tanks by orlushy - **How much does it cost?** VT5518 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/476131076-orlushy-25w-small-submersible-aquarium-heater-constant-temperature-betta-fish) ## Best For - orlushy enthusiasts ## Why This Product - Trusted orlushy brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Space-Savvy Design:** Slim 4.7-inch heater fits discreetly in small tanks without cluttering your aquatic setup. - • **Durable & Safe Materials:** Heat-resistant ABS shell and corrosion-proof quartz glass ensure long-lasting, safe operation. - • **Energy-Efficient Heating:** Intermittent heating with smart red/green indicator lights saves electricity while ensuring warmth. - • **Trusted Longevity & Support:** Proven tough with 1-year warranty and responsive customer service for peace of mind. - • **Precision Temperature Control:** Maintains a steady 78℉ ±3℉ for optimal betta comfort and health. ## Overview The Orlushy 25W Small Submersible Aquarium Heater is expertly engineered for 1-6 gallon freshwater and saltwater tanks, delivering precise, energy-efficient heating at a constant 78℉. Its compact 4.7-inch design fits seamlessly in small spaces, while durable ABS and quartz glass materials guarantee safety and longevity. Trusted by thousands of betta owners, it features smart indicator lights and a 1-year warranty, making it the ultimate choice for maintaining a healthy, comfortable aquatic environment. ## Description desertcart.com: Orlushy 25W Small Submersible Aquarium Heater, Constant Temperature Betta Fish Tank Heater of 78℉for 1-6 Gallons Freshwater & Saltwater Tanks : Pet Supplies Review: Reliable, simple heater for a great price. - I bought two of these 300w for a 75gallon freshwater tank and have had a 100w for a 10 gallon and I’ve had a very good experience with them. When researching heaters, it seems like no matter what brand or how much you spend, they can all quit at anytime or have a catastrophic malfunction and overheat. In my 2 years with the lower wattage heater, it has been very consistent and not had any fluctuations. I’m confident in the 300w heaters in my 75gal and would purchase these heaters again Review: good price, quality product so far - works well, temps accurate according to thermometer, fish doing well at 80 degrees. ## Features - 【25W Aquarium Heater】Orlushy 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 won’t 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 78℉. Accuracy is ±3℉. 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 78℉. - 【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 won’t 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. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BC6HLMY1 | | ASIN | B0BC6HLMY1 | | Best Sellers Rank | #1,018 in Pet Supplies ( See Top 100 in Pet Supplies ) #1 in Aquarium Heaters | | Brand Name | Orlushy | | Customer Reviews | 4.4 4.4 out of 5 stars (25,646) | | Date First Available | August 28, 2022 | | Date First Available | August 28, 2022 | | Item Package Dimensions L x W x H | 5.55 x 3.62 x 1.73 inches | | Item Weight | 3.52 ounces | | Item model number | CN25W | | Item model number | CN25W | | Manufacturer | Orlushy | | Manufacturer | Orlushy | | Package Dimensions | 5.55 x 3.62 x 1.73 inches; 3.53 ounces | | Size | 25W | | Target Audience Keyword | fish | ## Images ![Orlushy 25W Small Submersible Aquarium Heater, Constant Temperature Betta Fish Tank Heater of 78℉for 1-6 Gallons Freshwater & Saltwater Tanks - Image 1](https://m.media-amazon.com/images/I/61lvfpKGgGL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: I have a hermit cab tank, can i used this for a tank that is not submerged in water?** A: I would NOT. It is meant to be in water, and I think it would get too hot without water to disperse the heat. **Q: Could you use this to take the chill off in a atrium?** A: no, this must be completely under water and 150 watts is not going to have much impact on such a space.....better use 150 watt light bulb or more. **Q: The included digital Thermometer did not include a battery. Does anyone know what # watch battery it requires?** A: Mine did come with the battery, and "works". How accurate it is remains to be seen. I just received and installed the thermometer and heater tonight, so I'll check in the morning and compare to another thermometer. **Q: Digital Thermometer supplied with this heater is almost 3°F off. Is there a way to calibrate it?** A: Mine is 10 degrees off. I can not express how unhappy I am with this product. The dial on the top of the heater is nowhere near what the water temp is, and the digital thermometer they send with it is horrible. Two other sources say they are off by 10 degrees. Never again.... ## Customer Reviews ### ⭐⭐⭐⭐⭐ Reliable, simple heater for a great price. *by M***E on March 11, 2026* I bought two of these 300w for a 75gallon freshwater tank and have had a 100w for a 10 gallon and I’ve had a very good experience with them. When researching heaters, it seems like no matter what brand or how much you spend, they can all quit at anytime or have a catastrophic malfunction and overheat. In my 2 years with the lower wattage heater, it has been very consistent and not had any fluctuations. I’m confident in the 300w heaters in my 75gal and would purchase these heaters again ### ⭐⭐⭐⭐⭐ good price, quality product so far *by N***C on March 10, 2026* works well, temps accurate according to thermometer, fish doing well at 80 degrees. ### ⭐⭐⭐⭐⭐ Works great *by T***Y on March 5, 2026* Works amazing in my 29 gallon holds temp perfectly ## Frequently Bought Together - Orlushy 25W Small Submersible Aquarium Heater, Constant Temperature Betta Fish Tank Heater of 78℉for 1-6 Gallons Freshwater & Saltwater Tanks - Marineland Eclipse Replacement Filter Cartridges, For Aquarium Filtration - Marineland Portrait Glass LED Aquarium Kit, 5 Gallons, Hidden Filtration,Black --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/476131076-orlushy-25w-small-submersible-aquarium-heater-constant-temperature-betta-fish](https://www.desertcart.vu/products/476131076-orlushy-25w-small-submersible-aquarium-heater-constant-temperature-betta-fish) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-18*