--- product_id: 605865882 title: "Tetra 26446 HT Submersible Aquarium Heater With Electronic Thermostat, 100-Watt,Multicolor" brand: "tetra" price: "VT12683" currency: VUV in_stock: true url: https://www.desertcart.vu/products/605865882-tetra-26446-ht-submersible-aquarium-heater-with-electronic-thermostat-100 store_origin: VU region: Vanuatu --- # Fully Submersible Heating Indicator Temperature Ready Tetra 26446 HT Submersible Aquarium Heater With Electronic Thermostat, 100-Watt,Multicolor **Brand:** tetra **Price:** VT12683 **Availability:** βœ… In Stock ## Summary > 🌊 Dive into Comfort with Tetra's HT Heater! ## Quick Answers - **What is this?** Tetra 26446 HT Submersible Aquarium Heater With Electronic Thermostat, 100-Watt,Multicolor by tetra - **How much does it cost?** VT12683 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/605865882-tetra-26446-ht-submersible-aquarium-heater-with-electronic-thermostat-100) ## Best For - tetra enthusiasts ## Why This Product - Trusted tetra brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Compact Design:** Small footprint allows for seamless concealment behind plants or decor. - β€’ **Visual Indicators:** Red and green lights keep you informed about heating status at a glance. - β€’ **Versatile Installation:** Easily install vertically or horizontally to fit your aquarium's aesthetic. - β€’ **Effortless Temperature Control:** Automatically maintains a cozy 78Β°F for your tropical fish. - β€’ **Perfect for Mid-Sized Aquariums:** Ideal for tanks ranging from 10 to 30 gallons, catering to all life stages. ## Overview The Tetra 26446 HT Submersible Aquarium Heater is a 100-watt heater designed for aquariums between 10 to 30 gallons. It features an electronic thermostat that maintains a consistent temperature of 78Β°F, ensuring optimal conditions for tropical fish. With visual indicators for heating status and a compact, fully submersible design, this heater is both functional and easy to integrate into your aquarium setup. ## Description Tetra 26446 HT Submersible Aquarium Heater With Electronic Thermostat, 100-Watt,Multicolor ## Features - All Tetra HT heaters have indicator lights to let you know when the heater is on. It will be red when heating and green when the proper temperature has been reached. - The HT20 uses a built in electronic theromstat to automatically maintain water at 78Β° F which is ideal for most tropical fish. No adjustment is requried. - Ideal for aquariums between 10 to 30 gallons with hoods or glass canopies - The HT heater is fully submersbile and can be installed vertically or horizontally. It's small footprint makes it easy to conceal behind plants or other dΓ©cor. - Please read all label information upon delivery. DO NOT plug heater into an electrical outlet until it is placed inside the aquarium. ## Technical Specifications | Specification | Value | |---------------|-------| | Product Dimensions | 4.14 x 8.89 x 20.96 cm; 249.48 Grams | | Item model number | 26446 | | Pet Life Stage | All Life Stages | | Color | 10-30 Gallon | | Size | 10-30 Gallon | | Number of Items | 1 | | Quantity | 1 | | batteries required | No | | Batteries Included | No | | Item Weight | 249 g | ## Images ![Tetra 26446 HT Submersible Aquarium Heater With Electronic Thermostat, 100-Watt,Multicolor - Image 1](https://m.media-amazon.com/images/I/81Ic0gLmBNL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: would this work in a one gallon tank?** A: I wouldnt because the temp on this can go up to 79 degrees in a 10 gallon tank, for that reason i purchased a 10 watt for my 1 gallon tank and it keeps the tank at a perfect temp of 78. Check out the Marina C10 Submersible on Amazon for $10.00. **Q: Description says "the ht30 is adjustable between 72 degrees f and 85 degrees f". ok, why does the one i received say not adjustable, preset at 78?** A: All of the HT Heaters are preset now. Unfortunately, this is an old image and old description of the former HT 55. The description seems to have been translated to the HT 100 as well. Tetra is working to correct these issues immediately. We appreciate your bringing it to our attention. If you need any other assistance, please contact the Tetra Consumer Relations Team at 1-800-526-0650. **Q: Will this be okay in a 3 gallon betta bowl i'm making? if not any recomendations?** A: Yea i think so. I seriously look at this every day and im sooooooooooo glad i bought it. My betta looked so depressed before in his bowl because my house gets down to 60 degrees and his water was getting cold and now he is so happy his water stays 78 and he swims like a happy fish and has a lot of bubbles on top (means there happy). Its so crazy that warmer* water can make a fish soooo happy. This is a must. Yes buy it for a 3 gallon tank- i think it will work just fine and your fish will LOVE IT i promise! Let me know how it works out for you- because im so glad i got it! **Q: Does it turns off automatically** A: When it reaches the right temp. it automatically shuts off. When the light on it is green, it's heating; when the light is red, it's off ## Frequently Bought Together - Tetra 26446 HT Submersible Aquarium Heater With Electronic Thermostat, 100-Watt, Multicolor, 10-30 Gallon - PAIZOO Fish Tank Digital Thermometer Accurate LED Display to Β±0.9Β°F Tank Thermometer Aquarium Temperature Measurement Suitable for Fish, Axolotl, Turtle or Aquatic - Tetra Water Cleaner Gravel Siphon for Aquariums, Easily Clean Freshwater Aquariums --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/605865882-tetra-26446-ht-submersible-aquarium-heater-with-electronic-thermostat-100](https://www.desertcart.vu/products/605865882-tetra-26446-ht-submersible-aquarium-heater-with-electronic-thermostat-100) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-05*