{"product_id":"submersible-aquarium-heater-50w-300w-fish-tank-heating-rod","title":"Submersible Aquarium Heater 50W\/300W | Fish Tank Heating Rod","description":"\n\u003ch2\u003eKeep Your Fish Happy with Precise Water Temperature Control\u003c\/h2\u003e\n\u003cp\u003eGive your aquarium the stable, warm environment your fish deserve. This \u003cstrong\u003esubmersible glass aquarium heater\u003c\/strong\u003e is engineered to maintain consistent water temperatures between 20–34°C (68–93°F), making it ideal for tropical freshwater fish tanks. Available in \u003cstrong\u003e50W and 300W\u003c\/strong\u003e options to suit tanks of various sizes, this heater is a reliable, set-and-forget solution for hobbyists and serious aquarists alike.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e🌡️ \u003cstrong\u003eAdjustable Temperature Range:\u003c\/strong\u003e 20–34°C \/ 68–93°F — easy dial control for precise adjustment\u003c\/li\u003e\n  \u003cli\u003e💧 \u003cstrong\u003eFully Submersible:\u003c\/strong\u003e Waterproof double-insulation design for safe, complete underwater use\u003c\/li\u003e\n  \u003cli\u003e🔴 \u003cstrong\u003ePower Indicator Light:\u003c\/strong\u003e Instantly know when the heater is actively heating\u003c\/li\u003e\n  \u003cli\u003e🔁 \u003cstrong\u003eAuto-Thermostat:\u003c\/strong\u003e Automatically maintains your set temperature without constant monitoring\u003c\/li\u003e\n  \u003cli\u003e⚡ \u003cstrong\u003eTwo Power Options:\u003c\/strong\u003e 50W (ideal for smaller tanks) or 300W (for larger aquariums)\u003c\/li\u003e\n  \u003cli\u003e🛡️ \u003cstrong\u003eSafety First:\u003c\/strong\u003e Designed with double insulation for peace of mind\u003c\/li\u003e\n  \u003cli\u003e🐟 \u003cstrong\u003eFreshwater Use:\u003c\/strong\u003e Optimized for freshwater aquarium environments\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\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\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\u003eLength (50W)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e17.5 cm \/ 6.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength (300W)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e29 cm \/ 11.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCable Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~85 cm \/ 33.5 in\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 \/ 6–8.1 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eImportant Safety Notes\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eThis heater is suitable for \u003cstrong\u003efreshwater use only\u003c\/strong\u003e — do not use in saltwater tanks.\u003c\/li\u003e\n  \u003cli\u003eThe heating rod \u003cstrong\u003emust be fully submerged\u003c\/strong\u003e at all times during operation. Never allow any part to be exposed to air while powered.\u003c\/li\u003e\n  \u003cli\u003eWhen the indicator light is on, the heater is actively working.\u003c\/li\u003e\n  \u003cli\u003eBefore cleaning or handling, \u003cstrong\u003eturn off the power and allow 15–20 minutes\u003c\/strong\u003e for the rod to cool completely to avoid burns.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Submersible Aquarium Heating Rod (50W or 300W — your choice)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cp\u003eLooking to create the perfect aquarium setup? Check out these related picks from our store:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/laneige-lip-sleeping-mask-intense-hydration-vitamin-c-berry-070oz\"\u003e1 Lip Sleeping Mask Intense Hydration with Vitamin C, Berry\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-3l-air-humidifier-professional-large-capacity-humidifier-for-home-double-spray-port-cool-mist-maker-humidifier-with-led-light\"\u003e1.3L Cool Mist Humidifier with LED Night Light \u0026amp; Dual Spray\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFurther Reading\u003c\/h3\u003e\n\u003cp\u003eLearn more about responsible fishkeeping and aquatic animal welfare from the \u003ca href=\"https:\/\/www.fws.gov\/fisheries\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eU.S. Fish \u0026amp; Wildlife Service – Fisheries\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eQ: What size aquarium is the 50W submersible heater suitable for?\u003c\/h4\u003e\n\u003cp\u003eA: The 50W aquarium heater is best suited for smaller fish tanks, typically up to 15–20 gallons. For larger freshwater aquariums, the 300W version provides more consistent and efficient heating performance.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can this aquarium heating rod be used in a saltwater tank?\u003c\/h4\u003e\n\u003cp\u003eA: No — this submersible heater is designed for \u003cstrong\u003efreshwater aquariums only\u003c\/strong\u003e. Using it in a saltwater or marine environment may damage the heater and could be unsafe for your fish.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I safely clean the aquarium heater?\u003c\/h4\u003e\n\u003cp\u003eA: Always switch off and unplug the heater first, then wait \u003cstrong\u003e15 to 20 minutes\u003c\/strong\u003e for the heating rod to cool down completely before handling or cleaning. This prevents burns and extends the life of the device.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I know if the heater is working correctly?\u003c\/h4\u003e\n\u003cp\u003eA: The built-in \u003cstrong\u003epower indicator light\u003c\/strong\u003e illuminates when the heater is actively heating the water. Once the set temperature is reached, the thermostat will cycle the heater off automatically until the temperature drops again.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What size aquarium is the 50W submersible heater suitable for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The 50W aquarium heater is best suited for smaller fish tanks, typically up to 15–20 gallons. For larger freshwater aquariums, the 300W version provides more consistent and efficient heating performance.\"}}, {\"@type\": \"Question\", \"name\": \"Can this aquarium heating rod be used in a saltwater tank?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No — this submersible heater is designed for freshwater aquariums only. Using it in a saltwater or marine environment may damage the heater and could be unsafe for your fish.\"}}, {\"@type\": \"Question\", \"name\": \"How do I safely clean the aquarium heater?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Always switch off and unplug the heater first, then wait 15 to 20 minutes for the heating rod to cool down completely before handling or cleaning. 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