{"product_id":"submersible-aquarium-heater-rod-50w-300w-temperature-control-fish-tank","title":"Submersible Aquarium Heater Rod 50W\/300W – Fish Tank Temp Control","description":"\n\u003ch2\u003eSubmersible Aquarium Heater Heating Rod – 50W \/ 300W\u003c\/h2\u003e\n\u003cp\u003eKeep your freshwater fish thriving with this fully submersible aquarium heater. Designed with waterproof double insulation and a built-in thermostat, it maintains a steady, consistent water temperature so your fish stay comfortable year-round. The easy-to-read temperature scale lets you dial in the exact setting you need — no guesswork required.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Temperature Range:\u003c\/strong\u003e 20–34°C (68–93°F) to suit a wide variety of freshwater fish species\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFully Submersible Design:\u003c\/strong\u003e Waterproof double insulation for safe, worry-free operation inside your tank\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Indicator Light:\u003c\/strong\u003e LED indicator lets you know at a glance when the heater is actively working\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuto Temperature Regulation:\u003c\/strong\u003e Built-in thermostat automatically maintains your chosen water temperature\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo Wattage Options:\u003c\/strong\u003e 50W (ideal for small tanks) or 300W (for larger aquariums) — choose the right size for your setup\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEU Plug Compatible:\u003c\/strong\u003e 220–240V, 50\/60Hz\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWattage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50W \/ 300W (Optional)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e220–240V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50\/60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20–34°C \/ 68–93°F\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeater Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50W: 17.5cm (6.9in) | 300W: 29cm (11.43in)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCable Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 85cm (33.5in)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e170g–230g (6oz–8.1oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eImportant Usage Notes\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eThis heater is designed for \u003cstrong\u003efreshwater aquariums only\u003c\/strong\u003e — not suitable for saltwater use.\u003c\/li\u003e\n  \u003cli\u003eThe heating rod \u003cstrong\u003emust be fully submerged\u003c\/strong\u003e at all times during operation. Never allow it to be exposed above the waterline.\u003c\/li\u003e\n  \u003cli\u003eThe indicator light will illuminate when the heater is actively heating.\u003c\/li\u003e\n  \u003cli\u003eBefore cleaning your tank or the heater, \u003cstrong\u003eturn off the power and allow 15–20 minutes\u003c\/strong\u003e for the rod to cool down completely before handling.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Aquarium Heating Rod (50W or 300W — as selected)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cp\u003eEnhance your aquarium setup with other home and lifestyle essentials from our store:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/3d-sleep-mask-soft-breathable-light-blocking-eye-mask\"\u003e3D Sleep Mask – Soft Breathable Light-Blocking Eye Mask\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/792leds-510k-l7-large-red-light-therapy-led-panel-infrared-light-pad-human-pet-full-body-use-massage-relaxation-660nm-850nm\"\u003e792LEDs L7 Large Red Light Therapy LED Panel – Full Body Use\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/4d-cloud-sports-insoles-breathable-pu-cushion-men-women\"\u003e4D Cloud Sports Insoles – Breathable PU Cushion for Men \u0026amp; Women\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 tank is this aquarium heater suitable for?\u003c\/h4\u003e\n\u003cp\u003eA: The 50W heater is best suited for small freshwater aquariums (typically up to 50 litres), while the 300W version is ideal for larger tanks. As a general guide, allow approximately 1W of heater power per litre of water for best results.\u003c\/p\u003e\n\u003ch4\u003eQ: Can this heater be used in a saltwater or marine aquarium?\u003c\/h4\u003e\n\u003cp\u003eA: No — this submersible heating rod is designed for freshwater use only. Using it in saltwater may damage the unit and void any warranty.\u003c\/p\u003e\n\u003ch4\u003eQ: How do I set the temperature on this aquarium heater?\u003c\/h4\u003e\n\u003cp\u003eA: Simply rotate the adjustment dial on the top of the heater to your desired temperature within the 20–34°C (68–93°F) range. The built-in thermostat will then automatically switch on and off to maintain that target temperature, and the LED indicator light will show when it is actively heating.\u003c\/p\u003e\n\u003ch4\u003eQ: Is it safe to leave this heater running continuously?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The heater features waterproof double insulation and an automatic thermostat, making it safe for continuous operation when fully submerged. Always ensure the rod remains completely underwater and the power is switched off and the unit allowed to cool before any maintenance.\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 tank is this aquarium heater suitable for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The 50W heater is best suited for small freshwater aquariums (typically up to 50 litres), while the 300W version is ideal for larger tanks. As a general guide, allow approximately 1W of heater power per litre of water for best results.\"}}, {\"@type\": \"Question\", \"name\": \"Can this heater be used in a saltwater or marine aquarium?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No — this submersible heating rod is designed for freshwater use only. Using it in saltwater may damage the unit and void any warranty.\"}}, {\"@type\": \"Question\", \"name\": \"How do I set the temperature on this aquarium heater?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Simply rotate the adjustment dial on the top of the heater to your desired temperature within the 20–34°C (68–93°F) range. The built-in thermostat will then automatically switch on and off to maintain that target temperature, and the LED indicator light will show when it is actively heating.\"}}, {\"@type\": \"Question\", \"name\": \"Is it safe to leave this heater running continuously?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The heater features waterproof double insulation and an automatic thermostat, making it safe for continuous operation when fully submerged. Always ensure the rod remains completely underwater and the power is switched off and the unit allowed to cool before any maintenance.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/ehgwsn-rz.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/ehgwsn-rz.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Submersible Aquarium Heater Rod 50W\/300W – Fish Tank Temp Control\", \"item\": \"https:\/\/ehgwsn-rz.myshopify.com\/products\/submersible-aquarium-heater-rod-50w-300w-temperature-control-fish-tank\"}]}\u003c\/script\u003e","brand":"Qst","offers":[{"title":"EU 300w","offer_id":52267821203672,"sku":"14:29#EU 300w","price":27.04,"currency_code":"USD","in_stock":true},{"title":"EU 25w","offer_id":52267821236440,"sku":"14:175#EU 25w","price":27.04,"currency_code":"USD","in_stock":true},{"title":"EU 200w","offer_id":52267821269208,"sku":"14:10#EU 200w","price":27.04,"currency_code":"USD","in_stock":true},{"title":"EU 100w","offer_id":52267821301976,"sku":"14:173#EU 100w","price":27.04,"currency_code":"USD","in_stock":true},{"title":"EU 50w","offer_id":52267821334744,"sku":"14:193#EU 50w","price":27.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0834\/7146\/6712\/files\/S61dac3e63f3e4008ac0482c30ec09375d.webp?v=1787100970","url":"https:\/\/qstboost.com\/products\/submersible-aquarium-heater-rod-50w-300w-temperature-control-fish-tank","provider":"Qst","version":"1.0","type":"link"}