--- product_id: 586082802 title: "Jainsons Pet Products RS-25W Aquarium Heater Submersible Auto Thermostat Fish Tank Heater, Betta Tank and Small Aquarium Heater for Fish Tank, Freshwater & Saltwater Compatible" price: "$16.76" currency: USD in_stock: true reviews_count: 8 url: https://www.desertcart.us/products/586082802-jainsons-pet-products-rs-25w-aquarium-heater-submersible-auto-thermostat store_origin: US region: United States of America --- # Fresh & saltwater compatible 25W precise heating power Double glass shatterproof safety Jainsons Pet Products RS-25W Aquarium Heater Submersible Auto Thermostat Fish Tank Heater, Betta Tank and Small Aquarium Heater for Fish Tank, Freshwater & Saltwater Compatible **Price:** $16.76 **Availability:** ✅ In Stock ## Summary > 🔥 Keep your finned friends cozy with smart, safe warmth! ## Quick Answers - **What is this?** Jainsons Pet Products RS-25W Aquarium Heater Submersible Auto Thermostat Fish Tank Heater, Betta Tank and Small Aquarium Heater for Fish Tank, Freshwater & Saltwater Compatible - **How much does it cost?** $16.76 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/586082802-jainsons-pet-products-rs-25w-aquarium-heater-submersible-auto-thermostat) ## 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 - • **Compact & Stylish:** Sleek design fits discreetly in any mini tank setup - • **Premium Safety Design:** Shatterproof glass + BPA-free plastic for worry-free fish care - • **Smart Auto Thermostat:** Maintains perfect aquatic temperature effortlessly - • **Versatile Compatibility:** Ideal for Betta tanks, small freshwater & saltwater aquariums - • **Maintenance-Free Operation:** Fully submersible and self-regulating for hassle-free use ## Overview The RS-25W Aquarium Heater is a compact, submersible device designed for small freshwater and saltwater tanks, including Betta habitats. Featuring a 25W power output, double shatterproof glass protection, and an automatic thermostat, it ensures precise temperature control and maximum safety. Crafted with BPA-free materials, it offers a maintenance-free, reliable heating solution that blends seamlessly into any aquarium environment. ## Description Product Description Jainsons Pet Products RS-25W Aquarium Heater Submersible Auto Thermostat Fish Tank Heater, Betta Tank and Small Aquarium Heater for Fish Tank, Freshwater & Saltwater Compatible Superior Safety and Enriched Ambiance: The fish tank heater is constructed with shatterproof glass and BPA-free plastic, ensuring a safe habitat for your fish. Usefull for Betta fish tanks and Small tanks. Temperature Control: This aquarium heater excels in providing a customizable temperature, catering to various aquatic species. Suitable for freshwater and saltwater tanks, it creates a natural environment for your finned friends. Double Glass Protection & Maintenance Free. Fully Automatic & Submersible. Package Content: RS-25W Aquarium Glass Heater Review: Good for mini tank - I have ordered previously from same brand a big size temperature regulation for my big tank which is still working great since long years. Quality is perfect. My betta fish is not doing good and had some symptoms of fin rot so I ordered this. Recieved in good condition complete safely. Also having safe cup below the heater which avoid breakage. Definetly value for money. I started to show that it's functionality is working great. Size is for mini tank only or with less fishes. Heater looks classy in Apperance. Thanks to vendor for perfect and safe delivery. Review: Works well - Has a black rubber bump on top rotate it to adjust temperature you can see inside the glass the set temperature. Auto cut off ## Features - Superior Safety and Enriched Ambiance: The fish tank heater is constructed with high-quality shatterproof glass and BPA-free plastic, ensuring a safe habitat for your fish. Usefull for Betta fish tanks and Small tanks. - Temperature Control: This aquarium heater excels in providing a customizable temperature, catering to various aquatic species. Suitable for freshwater and saltwater tanks, it creates a natural environment for your finned friends. - Smart, Worry-Free Heating: Equipped with an intelligent automatic temperature control system, this small aquarium heater ensures optimal comfort for your fish by switching off when the desired temperature is reached and back on if water temperature falls. - Double Glass Protection & Maintenance Free. Fully Automatic & Submersible. - Package Content: RS-25W Aquarium Glass Heater ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | Jainsons E-62 Sector-7 Noida | | Country of Origin | China | | Item model number | RS-25W AQUARIUM GLASS HEATER | | Product Dimensions | 20.32 x 2.54 x 2.54 cm; 170 g | | ASIN | B0CNW9L4RZ | ## Images ![Jainsons Pet Products RS-25W Aquarium Heater Submersible Auto Thermostat Fish Tank Heater, Betta Tank and Small Aquarium Heater for Fish Tank, Freshwater & Saltwater Compatible - Image 1](https://m.media-amazon.com/images/I/71PZl28N8GL.jpg) ![Jainsons Pet Products RS-25W Aquarium Heater Submersible Auto Thermostat Fish Tank Heater, Betta Tank and Small Aquarium Heater for Fish Tank, Freshwater & Saltwater Compatible - Image 2](https://m.media-amazon.com/images/I/71x3ShuVLBL.jpg) ![Jainsons Pet Products RS-25W Aquarium Heater Submersible Auto Thermostat Fish Tank Heater, Betta Tank and Small Aquarium Heater for Fish Tank, Freshwater & Saltwater Compatible - Image 3](https://m.media-amazon.com/images/I/71QB4kOFUmL.jpg) ![Jainsons Pet Products RS-25W Aquarium Heater Submersible Auto Thermostat Fish Tank Heater, Betta Tank and Small Aquarium Heater for Fish Tank, Freshwater & Saltwater Compatible - Image 4](https://m.media-amazon.com/images/I/71eys-Hx3mL.jpg) ![Jainsons Pet Products RS-25W Aquarium Heater Submersible Auto Thermostat Fish Tank Heater, Betta Tank and Small Aquarium Heater for Fish Tank, Freshwater & Saltwater Compatible - Image 5](https://m.media-amazon.com/images/I/712kszpvosL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good for mini tank *by D***A on 16 September 2024* I have ordered previously from same brand a big size temperature regulation for my big tank which is still working great since long years. Quality is perfect. My betta fish is not doing good and had some symptoms of fin rot so I ordered this. Recieved in good condition complete safely. Also having safe cup below the heater which avoid breakage. Definetly value for money. I started to show that it's functionality is working great. Size is for mini tank only or with less fishes. Heater looks classy in Apperance. Thanks to vendor for perfect and safe delivery. ### ⭐⭐⭐⭐ Works well *by K***R on 14 March 2025* Has a black rubber bump on top rotate it to adjust temperature you can see inside the glass the set temperature. Auto cut off ### ⭐⭐⭐⭐⭐ Trick to turn on... 😉 *by R***E on 29 December 2025* It was not working at first... But i slightly move the temperature control knob and it started working perfectly fine... ## Frequently Bought Together - Jainsons Pet Products RS-25W Aquarium Heater Submersible Auto Thermostat Fish Tank Heater, Betta Tank and Small Aquarium Heater for Fish Tank, Freshwater & Saltwater Compatible - VAYINATO Aquatic Remedies Aquarium Fish Tank Must Have Starter Combo (Stress Heal + Aquaria Clear + Microlife S2) 3 * 100 Ml - 3 Pcs Combo Starter Pack --- ## 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.us/products/586082802-jainsons-pet-products-rs-25w-aquarium-heater-submersible-auto-thermostat](https://www.desertcart.us/products/586082802-jainsons-pet-products-rs-25w-aquarium-heater-submersible-auto-thermostat) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-12*