--- product_id: 424325871 title: "Mini Aquarium Heater 5V/2A USB 10W Small Fish Tank Heater for Tanks 1 Gal" price: "₩25214" currency: KRW in_stock: true reviews_count: 11 url: https://www.desertcart.kr/products/424325871-mini-aquarium-heater-5v-2a-usb-10w-small-fish-tank store_origin: KR region: South Korea --- # Compact 2-inch size fits 1 gal tanks 5V/2A USB powered convenience 10W precise heating power Mini Aquarium Heater 5V/2A USB 10W Small Fish Tank Heater for Tanks 1 Gal **Price:** ₩25214 **Availability:** ✅ In Stock ## Summary > 🔥 Tiny heater, huge comfort—keep your tank perfectly cozy! ## Quick Answers - **What is this?** Mini Aquarium Heater 5V/2A USB 10W Small Fish Tank Heater for Tanks 1 Gal - **How much does it cost?** ₩25214 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/424325871-mini-aquarium-heater-5v-2a-usb-10w-small-fish-tank) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Temp Memory:** Keeps your set temperature intact even after power interruptions—no resets needed. - • **Hands-Free Control:** 52-inch external controller lets you adjust temps without getting wet or buying extras. - • **Space-Savvy Powerhouse:** Mini 2-inch design that maximizes tank space without compromising heat. - • **Safety First Overheat Guard:** Auto-shuts at 95°F with clear 'HI' alert to protect your aquatic friends. - • **Universal Aquatic Compatibility:** Perfect for freshwater & saltwater tanks, supporting diverse species from Betta to Clownfish. ## Overview This Mini Aquarium Heater delivers precise 10W heating in a compact 2-inch form factor, powered conveniently via USB (5V/2A). Featuring intelligent memory to retain temperature settings after power loss, an external 52-inch controller for easy adjustments, and built-in overheat protection that halts operation above 95°F, it’s ideal for small 1-gallon tanks housing a variety of freshwater and saltwater species. ## Description desertcart.com: Mini Aquarium Heater 5V/2A USB 10W Small Fish Tank Heater for Tanks 1 Gal | Digital Display Thermostat Betta Heater with Dry-Run & Overheat Protection, Memory Function : Pet Supplies Review: Cute heater for a tiny betta bowl - I love the tiny size and price of this heater! It isn’t enough to heat a half gallon tank when the house is 67 degrees but works great in tiny bowls. Setting the temperature is super easy and it never went higher than it was supposed to. My betta likes it warm and there is no noise and no annoying light in the heater. My son also likes it with his fish. Review: Works well, just make sure you have a charging block - Good quality for the price! It sticks to the side of my micro tank well and keeps the temperature consistent. My little shrimp seem to be happy. ## Features - Small And Powerful: This mini aquarium heater is about 2inch long, and is super small. It is specially designed for small fish tanks and does not occupy any space. Upgrade the chip to make the temperature sensing more sensitive and the temperature rise more accurate - Intelligent Memory Function: After setting the target temperature, the power is suddenly turned off, and the target temperature remains unchanged after turning on the power again - Overheating Protection: If the water temperature exceeds 95°F, the error code "HI" appears, the heater stops working, and when it returns to below 95°F, the error code disappears and it starts working again - External Controller: External temperature controller, no need to get your hands wet, no need to buy other controllers, 52 inch long power cord, easy to install, easy to control - Widely Used: Suitable for freshwater and saltwater, meet the growth temperature for turtle, Fighting fish, Dwarf Gourami, Koi, Corridors, Paradise Fish, Clownfish, swordtail ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 4.0 out of 5 stars 372 Reviews | ## Images ![Mini Aquarium Heater 5V/2A USB 10W Small Fish Tank Heater for Tanks 1 Gal - Image 1](https://m.media-amazon.com/images/I/61xtnDOKsnL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: How to change temperature unit?** A: Press and hold "SET" button, power on the heater and then release "SET" button, the temperature unit will be changed between C and F. **Q: The device displays the “E1” error code during use. How can this be resolved?** A: The power will be cut off and stop heating automatically if the heater leaves the water or the heater do not fully immerse in the water. Display 'E1' error code. The heater will re-work if it goes back to water. **Q: The device displays the “H1” error code during use. How can this be resolved?** A: The power will be cut off and stop heating automatically if the water temperature exceeds 95°F, Display 'H1' error code. The heater will re-work if the water temperature below 93°F. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Cute heater for a tiny betta bowl *by S***M on November 22, 2023* I love the tiny size and price of this heater! It isn’t enough to heat a half gallon tank when the house is 67 degrees but works great in tiny bowls. Setting the temperature is super easy and it never went higher than it was supposed to. My betta likes it warm and there is no noise and no annoying light in the heater. My son also likes it with his fish. ### ⭐⭐⭐⭐⭐ Works well, just make sure you have a charging block *by D***T on September 28, 2026* Good quality for the price! It sticks to the side of my micro tank well and keeps the temperature consistent. My little shrimp seem to be happy. ### ⭐ Does not work, do not purchase *by K***R on September 8, 2026* Does not seem to be working AT ALL. I have it in a very small 2 gallon tank and it is reading as "78 degrees" but I am feeling it with my fingers and it's ice cold. I have another tank right next to it that is ACTUALLY 78 degrees and it's much warmer and more appropriate. I see similar reviews. Do not purchase. ## Frequently Bought Together - YOFOTHS Adjustable Mini Aquarium Heater 0.5/1/2/3 Gallon Submersible Small Fish Tank Heater 10W/20W/30W Digital Display Thermostat External Temperature Controller - Useekoo USB Aquarium Air Pump, Ultra Durable & Quiet USB Nano Air Pump, Small Air Bubbler for Aquarium Fish Tank with Air Stone and Silicone Tube - Sea-Monkeys® Instant Life - World's Only Instant Pets® - Ages 6+ (Pack of 1) --- ## 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.kr/products/424325871-mini-aquarium-heater-5v-2a-usb-10w-small-fish-tank](https://www.desertcart.kr/products/424325871-mini-aquarium-heater-5v-2a-usb-10w-small-fish-tank) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-10-27*