--- product_id: 92775860 title: "SZELAM 25W Smart Mini Aquarium Heater, Betta Fish Tank Heater Thermostat Warmer Submersible Anti-Explosion/Energy-efficient Water Temp Controller" brand: "szelam" price: "VT669" currency: VUV in_stock: false reviews_count: 13 url: https://www.desertcart.vu/products/92775860-szelam-25w-smart-mini-aquarium-heater-betta-fish-tank-heater store_origin: VU region: Vanuatu --- # 25W Power 73ºF-82ºF Range Anti-Explosion SZELAM 25W Smart Mini Aquarium Heater, Betta Fish Tank Heater Thermostat Warmer Submersible Anti-Explosion/Energy-efficient Water Temp Controller **Brand:** szelam **Price:** VT669 **Availability:** ❌ Out of Stock ## Summary > 🐠 Dive into Smart Heating! ## Quick Answers - **What is this?** SZELAM 25W Smart Mini Aquarium Heater, Betta Fish Tank Heater Thermostat Warmer Submersible Anti-Explosion/Energy-efficient Water Temp Controller by szelam - **How much does it cost?** VT669 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/92775860-szelam-25w-smart-mini-aquarium-heater-betta-fish-tank-heater) ## Best For - szelam enthusiasts ## Why This Product - Trusted szelam brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safety First:** Designed with anti-shock and scald-preventing features, ensuring a safe environment for both you and your aquatic friends. - • **Quality Assurance:** Backed by CE, ROHS, and FCC certifications, plus a 90-day replacement guarantee for peace of mind. - • **Compact & Efficient:** Perfectly sized for mini aquariums under 5 gallons, providing energy-efficient heating without taking up space. - • **High-Quality Materials:** Crafted from heat-resistant ABS housing and MCH Alumina ceramic, ensuring durability and safety for your pets. - • **Smart Temperature Control:** Experience effortless heating with our intelligent circuit board that maintains a stable temperature without manual adjustments. ## Overview The SZELAM 25W Smart Mini Aquarium Heater is a state-of-the-art submersible heater designed for mini aquariums under 5 gallons. With an automatic temperature regulation range of 73ºF-82ºF, it ensures a safe and stable environment for your fish. Made from high-quality, heat-resistant materials, this heater is both energy-efficient and safe, featuring anti-explosion technology. Certified by CE, ROHS, and FCC, it comes with a 90-day replacement guarantee, making it a reliable choice for any aquarium enthusiast. ## Description ★Information: Suitable for all shapes and materials fish tanks, whether it is glass or plastic, all can be used. Dedicated designed for small and mini sized aquarium under 5 gallons, intelligent temperature regulate, very easy to use. Suitable for all kinds of aquarium pets, tropical fish, goldfish, ornamental fish and turtles, can work in both brine and fresh water. Your little fishes and turtles will no longer fear the winter! 3 Aquarium Decor Artificial Plants make their homes beautiful not boring. ★Attention points: In a long-term use, please regularly clean the water grass and impurities attached on the heater surface. The heater is completely sealed so please don't disassemble it, that will make it permanently damaged. We freely provide 1 year quality assurance for this product, we will be responsible for any product ★It is designed to work under water only, please NOT turn it on when it's outside water, as dry burning might lead to malfunction. Please don't put it in the water if the wire or heater damaged ★Functionality : ★Material: ABS anti-scalding housing -40ºF~212ºF(-40℃~100℃), sandy quartz filler, MCH Alumina ceramic heating system ★Waterproof: IP68: 47in / 120CM indefinite waterproof ★Rated power: 25W ★Rated operating voltage: 110V - 120V ★Automatic constant temp:77℉ - 82℉ / 25℃ - 28 ℃ (±1℃) ★Security protection systems: anti-scalding surface treatment, anti-explosion, anti-cracking Applicable volume of fish tank water: under 5 gallons or 20 liters ★Specifications: Size: 5.3in x 1in x 0.7in / 13.5cm x 2.5cm x 1.7cm Weight (about): 5.3oz / 150g Package contents: 1*Mini Fish Tank Heater+ 2PCS Aquarium Decor Artificial Plant If you want to know more details or have any questions, please check the page for more information or contact our customer service. ## Features - Smart Control- Adopted intelligent circuit board, with a precise temperature sensing probe and constant temperature heating system. No thermometer required, no more operations: Unlike other conventional heaters, need you to manually adjust the temperature. Our Smart Aquarium Heater just plug the power cable then it will work. It works in intermittent operation mode and will automatically turn on/off to achieve the setting temperature constantly and stably, Energy-efficient. - Easier to Use- SZELAM Mini Heater different from a manually adjusted heater. Our heater automatic temperature regulate on 73ºF-82ºF(25℃-28℃) , no need to set. Prevent electric shock and burns. Keep you and your family safe. Position it near a strong water flow for whole aquarium are in the same temperature. The outlet of filter is ideal. - High Quality- Made by heat resistant ABS housing, sandy quartz filler and MCH Alumina ceramic heating system, anti explosion & cracking, it is scald-preventing for your pets and safe operation for you, safer and more stable to use. - Mini Sized- Fully submersible compact betta fish heater Gift with 2PCS Aquarium Decor Artificial Plant. Specific perfect for mini aquarium under 5 gal/20L. SZELAM Mini Heater provide a constant warm for your pet fish to stay healthy, suitable both for fresh and salt water. - Quality Assurance- This product have certificated by CE, ROHS, FCC certifications. We will provide replacement items for any product problems within 90 days after your purchase it. ## Images ![SZELAM 25W Smart Mini Aquarium Heater, Betta Fish Tank Heater Thermostat Warmer Submersible Anti-Explosion/Energy-efficient Water Temp Controller - Image 1](https://m.media-amazon.com/images/I/71xd2Yw3O5L.jpg) ![SZELAM 25W Smart Mini Aquarium Heater, Betta Fish Tank Heater Thermostat Warmer Submersible Anti-Explosion/Energy-efficient Water Temp Controller - Image 2](https://m.media-amazon.com/images/I/71Xm8sPUUJL.jpg) ![SZELAM 25W Smart Mini Aquarium Heater, Betta Fish Tank Heater Thermostat Warmer Submersible Anti-Explosion/Energy-efficient Water Temp Controller - Image 3](https://m.media-amazon.com/images/I/71mcZcW-UEL.jpg) ![SZELAM 25W Smart Mini Aquarium Heater, Betta Fish Tank Heater Thermostat Warmer Submersible Anti-Explosion/Energy-efficient Water Temp Controller - Image 4](https://m.media-amazon.com/images/I/81lUQCvne+L.jpg) ![SZELAM 25W Smart Mini Aquarium Heater, Betta Fish Tank Heater Thermostat Warmer Submersible Anti-Explosion/Energy-efficient Water Temp Controller - Image 5](https://m.media-amazon.com/images/I/61Br9dW91XL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐ slow, but eventually seems to do what it's supposed to *by M***I on Reviewed in the United States 🇺🇸 on May 26, 2019* We got a betta, and the pet store was amazingly uninformative. When we realized the poor little thing needed to be in warm water, we freaked out and got this heater with next day delivery. We put it in, and for a good long while it would not heat up the tank - at least not to the desired 78 degrees. It basically took a whole 24 hours to get there, so we were quite concerned. Now that it's reached that temperature, I'm going to see if it stays more or less there, or if it becomes too hot (hope not!), but so far - it seems fine.The unit is super easy to install, the suction cups work great: while finding a good spot, I did have one of the suction cups come off, but it was super easy to slip it back into place and carry on. The two plants (I thought it was supposed to be three?) are not really important, but they are cute, and my son was very happy to add 'decorations' :) while my mom wondered why they weren't green - hahaha!The pic is of when we initially put it in and the temp wouldn't budge past 72 degrees for a good long while. After some additional questioning at the pet store, it seems that the betta's range is 72 - 82 degrees, anyway - so... in theory he should have been comfortable since we put it in (in reality, he went and snuggled up against that thing until the rest of the tank warmed up! poor fish... ) ### ⭐⭐⭐ Stopped working *by H***E on Reviewed in the United States 🇺🇸 on November 23, 2022* It worked for awhile then suddenly stopped working. It no longer heats the water and I had to buy a new one. ### ⭐⭐⭐⭐ Know your tank before you buy a heater! *by D***A on Reviewed in the United States 🇺🇸 on April 6, 2019* Very slim design. Even in my small, round tank it almost disappears. The indicator light is a reassuring feature. I love that I can glance at the temp and know what the heater is doing because of the light. My fish is indifferent to it. He fights with the glass thermometer...but he's fine with the heater. Also it hugs the glass so no chance of him getting caught in any way.This is a review for the heater, but also something I learned the hard way and I hope someone can glean something here. I have a 3.3 gal round Topfin Bettaflo tank. It's 10 inches tall and 10 inches at the widest point. The filter is a substrate, the return tower comes right up the middle of the tank, so there isn't a whole lot of interior room. The thing is, heat doesn't radiate out thru the glass. So when the lid is on, it's like a thermos inside and the temp climbed to 86° with my previously purchased 15 watt heater from Petsmart. That's only a few degrees away from a cooked fishy. I honestly thought fish tanks were supposed to be relaxing. This tank stresses me out because of the difficulty maintaining the temp. It's like the glass is LowE because a stick on thermometer won't read any temperature. As far as the heater itself, it's awesome and after a few days of regulation, it now keeps my tank at a steady 82 degrees. A definite reccomend!! --- ## 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/92775860-szelam-25w-smart-mini-aquarium-heater-betta-fish-tank-heater](https://www.desertcart.vu/products/92775860-szelam-25w-smart-mini-aquarium-heater-betta-fish-tank-heater) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-05*