{"product_id":"mini-submersible-aquarium-heater-usb-thermostatic-10w-2l-fish-tank","title":"Mini Submersible Aquarium Heater | USB 10W, 18–34°C for 2L Tanks","description":"\n\u003ch2\u003eMini Submersible Aquarium Heater – Compact, Safe \u0026amp; Precise Temperature Control\u003c\/h2\u003e\n\u003cp\u003eKeep your aquatic friends comfortable year-round with this \u003cstrong\u003eMini Submersible Aquarium Heater\u003c\/strong\u003e. Designed for small tanks, pet water dispensers, and turtle enclosures, this thumb-sized heating stick packs powerful thermostatic technology into a sleek, quartz explosion-proof housing. With USB-powered convenience and an adjustable temperature range of \u003cstrong\u003e18–34°C\u003c\/strong\u003e, it's the perfect solution for 2-litre freshwater and saltwater setups.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eMade in Mainland China.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomatic Thermostatic Control:\u003c\/strong\u003e Maintains your chosen temperature precisely within the 18–34°C range — no guesswork required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverheating Protection:\u003c\/strong\u003e Built-in safety mechanism prevents dangerous temperature spikes, keeping your aquatic life safe.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB Powered (5V 2A):\u003c\/strong\u003e Plug directly into a mobile phone charger, power bank, or USB adapter — no dedicated power outlet needed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuartz Explosion-Proof Construction:\u003c\/strong\u003e Durable quartz housing ensures safe, reliable operation even in continuous use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Compact Design:\u003c\/strong\u003e Main unit measures just 2.5 × 5.6 cm with a 52mm heating rod — unobtrusive and aesthetically pleasing in any tank.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExternal Temperature Adjustment:\u003c\/strong\u003e Easily set and change your desired temperature from outside the tank without disrupting your fish.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Water Level:\u003c\/strong\u003e Requires just 2 cm of water depth — ideal for fish, turtles, and small pet feeders.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFreshwater \u0026amp; Saltwater Compatible:\u003c\/strong\u003e Versatile enough for a wide range of aquatic environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMini Heating Stick\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMain Unit Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5 × 5.6 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Cord Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.3 m\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e18–34°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10W\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5V 2A (USB)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSuitable Water Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 2 Litres\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible With\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFreshwater \u0026amp; Saltwater Aquariums, Pet Feeders, Turtle Tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eImportant Usage Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUse a \u003cstrong\u003e5V 2A adapter\u003c\/strong\u003e for best performance. Lower current may cause display flickering or prevent heating.\u003c\/li\u003e\n  \u003cli\u003eSuitable for \u003cstrong\u003e2-litre water capacity\u003c\/strong\u003e per unit. For larger tanks (e.g. 4L), use two heaters simultaneously for efficient warming.\u003c\/li\u003e\n  \u003cli\u003eWhen using a multi-port USB charger, \u003cstrong\u003eonly activate one heater at a time\u003c\/strong\u003e per port to avoid reduced efficiency.\u003c\/li\u003e\n  \u003cli\u003eThis heater does \u003cstrong\u003enot\u003c\/strong\u003e feature automatic power-off when removed from water — always unplug before removing from the tank.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-piece-storage-tray-360-degree-refrigerator-storage-rotating-tray-used-for-kitchen-spice-jars-and-sundry-storage-turntable-1\"\u003e360-Degree Rotating Storage Tray – Great for Organising Tank Accessories\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-multifunction-portable-kids-toy-storage-bag-building-blocks-play-mat\"\u003eMultifunction Portable Storage Bag – Keep Your Aquarium Supplies Tidy\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.fws.gov\/\" target=\"_blank\" rel=\"noopener\"\u003eU.S. Fish and Wildlife Service\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What size aquarium is this mini submersible heater suitable for?\u003c\/h4\u003e\n\u003cp\u003eA: This mini aquarium heater is designed for tanks or containers holding approximately \u003cstrong\u003e2 litres of water\u003c\/strong\u003e. It is ideal for small fish tanks, turtle enclosures, and pet water dispensers. For larger setups such as a 4-litre tank, you can use two units simultaneously to achieve effective, even heating.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I use a power bank to power this aquarium heater?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The heater uses a standard \u003cstrong\u003eUSB 5V 2A input\u003c\/strong\u003e, making it fully compatible with power banks, mobile phone chargers, and USB adapters. Just ensure your power source delivers the required 5V 2A — lower output may result in display flickering or the unit not heating properly.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this heater safe for both freshwater and saltwater aquariums?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The mini submersible heater is compatible with both \u003cstrong\u003efreshwater and saltwater environments\u003c\/strong\u003e. Its quartz explosion-proof housing ensures safe, durable performance in various aquatic setups, including fish tanks, turtle tanks, and small pet feeders.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does the heater turn off automatically if it's out of water?\u003c\/h4\u003e\n\u003cp\u003eA: No — this model does \u003cstrong\u003enot\u003c\/strong\u003e include an automatic power-off feature when removed from water. It is important to always unplug the heater from its power source before removing it from the tank to ensure safe operation.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What size aquarium is this mini submersible heater suitable for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This mini aquarium heater is designed for tanks or containers holding approximately 2 litres of water. It is ideal for small fish tanks, turtle enclosures, and pet water dispensers. For larger setups such as a 4-litre tank, you can use two units simultaneously to achieve effective, even heating.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use a power bank to power this aquarium heater?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! 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