{"product_id":"submersible-aquarium-heater-25w-300w-fish-tank-heating-rod-1","title":"Submersible Aquarium Heater 25W–300W | Fish Tank Heating Rod","description":"\n\u003ch2\u003eKeep Your Fish Happy \u0026amp; Healthy with Precise Temperature Control\u003c\/h2\u003e\n\u003cp\u003eMaintain the perfect water temperature for your aquatic pets with this reliable \u003cstrong\u003esubmersible aquarium heater\u003c\/strong\u003e. Whether you have a small 15-litre nano tank or a large 150-litre display aquarium, the HX-906 series has the right power output for you — from 25W all the way up to 300W. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose This Aquarium Heater?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecise Temperature Control:\u003c\/strong\u003e The built-in adjustable thermostat lets you dial in the exact temperature your fish need. The automatic constant-temperature function keeps the water stable, preventing dangerous fluctuations that can stress or harm aquatic life.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIP68 Waterproof Rated:\u003c\/strong\u003e Constructed from high-grade glass and fully submersible. The IP68 rating means you can trust it to operate reliably when completely underwater, giving you peace of mind 24\/7.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSafety Protective Cover:\u003c\/strong\u003e Select models include a protective guard that shields your fish from direct contact with the heating element, preventing accidental burns and keeping your tank's inhabitants safe.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple Sizes Available:\u003c\/strong\u003e Choose from four heater lengths — 180mm, 200mm, 235mm, and 300mm — to fit tanks of all shapes and sizes. Each unit comes with a generous \u003cstrong\u003e90cm (35.43\") power cord\u003c\/strong\u003e for flexible positioning.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Power Range for Any Tank:\u003c\/strong\u003e\n    \u003cul\u003e\n      \u003cli\u003e25W → 15–20 Litre tanks\u003c\/li\u003e\n      \u003cli\u003e50W → 20–30 Litre tanks\u003c\/li\u003e\n      \u003cli\u003e100W → 40–60 Litre tanks\u003c\/li\u003e\n      \u003cli\u003e200W → 80–120 Litre tanks\u003c\/li\u003e\n      \u003cli\u003e300W → 120–150 Litre tanks\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Strong suction cups are included so you can securely mount the heater against the glass without tools. Setup takes just minutes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFreshwater \u0026amp; Saltwater Compatible:\u003c\/strong\u003e Works equally well in freshwater tropical tanks, reef aquariums, and saltwater setups. Ideal for tropical fish, shrimp, turtles, and other aquatic life.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEU Plug:\u003c\/strong\u003e Fitted with a standard EU plug for easy use across European countries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25W \/ 50W \/ 100W \/ 200W \/ 300W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeater Lengths\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e180mm \/ 200mm \/ 235mm \/ 300mm\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\u003e90cm (35.43 inches)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWaterproof Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP68 (fully submersible)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePlug Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEU Plug\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Tank Types\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFreshwater \u0026amp; Saltwater\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Heating Rod (size\/wattage as selected)\u003c\/li\u003e\n  \u003cli\u003eSuction cups for mounting\u003c\/li\u003e\n  \u003cli\u003eProtective cover (included with select models)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eLearn More About Aquarium Fish Health\u003c\/h3\u003e\n\u003cp\u003eMaintaining stable water temperature is one of the most important factors in keeping healthy fish. For more guidance on aquatic animal care, visit the \u003ca href=\"https:\/\/www.epa.gov\/watersense\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eEPA's WaterSense resource\u003c\/a\u003e or explore fish-keeping best practices at \u003ca href=\"https:\/\/www.fws.gov\/fisheries\" target=\"_blank\" rel=\"noopener noreferrer\"\u003ethe U.S. Fish \u0026amp; Wildlife Service Fisheries page\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What wattage aquarium heater do I need for my fish tank?\u003c\/h4\u003e\n\u003cp\u003eA: As a general rule, you need approximately 1–2 watts per litre of water. This heater range covers tanks from 15L (25W) up to 150L (300W). Select the wattage that matches your tank's volume — for example, choose the 100W model for a 40–60 litre aquarium for optimal and efficient heating.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this aquarium heater safe to leave on all the time?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The built-in automatic constant-temperature thermostat cycles the heater on and off to maintain your set temperature, so it is designed for continuous, unattended operation. The IP68 waterproof rating and safety protective cover add extra layers of protection for both your fish and your tank.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I use this heater in a saltwater or reef aquarium?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. This submersible heating rod is fully compatible with both freshwater and saltwater aquariums, making it a versatile choice for tropical fish tanks, reef tanks, shrimp tanks, and more.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I install the aquarium heater?\u003c\/h4\u003e\n\u003cp\u003eA: Installation is straightforward. Attach the included suction cups to the heater, then press them firmly against the inside glass wall of your aquarium. Position the heater diagonally or vertically for the best heat distribution. Always allow the heater to adjust to the water temperature for 15–30 minutes before plugging it in.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does this heater come with a European (EU) plug?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. This aquarium heater is fitted with a standard EU plug, making it ready to use in European countries without any adapter needed.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What wattage aquarium heater do I need for my fish tank?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"As a general rule, you need approximately 1–2 watts per litre of water. This heater range covers tanks from 15L (25W) up to 150L (300W). Select the wattage that matches your tank's volume — for example, choose the 100W model for a 40–60 litre aquarium for optimal and efficient heating.\"}}, {\"@type\": \"Question\", \"name\": \"Is this aquarium heater safe to leave on all the time?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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