{"product_id":"zhgservu-100w-300w-500w-aquarium-heater-submersible-auto-thermostat-10-90-gallon-tank","title":"ZHGSERVU 100W\/300W\/500W Aquarium Heater: Submersible, Auto Thermostat, 10-90 Gallon Tank","description":"\u003ch2\u003eStable warmth for thriving Aquariums\u003c\/h2\u003e\n\u003cp\u003eMaintaining a steady water temperature is a practical foundation for healthy fish, plants, and invertebrates. The ZHGSERVU Aquarium Heater blends a robust, submersible design with precise temperature control, aiming to deliver reliable warmth in both freshwater and saltwater tanks. Its thoughtful construction emphasizes safety, durability, and ease of use, helping you create a stable aquatic environment without guesswork.\u003c\/p\u003e\n\n\u003ch2\u003eKey features that support your daily routine\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExplosion-proof quartz glass sleeve\u003c\/strong\u003e with a protective shield helps minimize risk of damage and leakage while in operation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomatic temperature control\u003c\/strong\u003e maintains your chosen setpoint, with subtle adjustments to keep the water within a narrow range.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomatic safety shut-off\u003c\/strong\u003e and overheating protection provide an extra layer of assurance when you’re away from the tank.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable nickel wiring\u003c\/strong\u003e stabilizes temperature readings and extends component life for long-term use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFreshwater and saltwater friendly\u003c\/strong\u003e design works across aquatic environments, with guidance on suitable tropical ranges.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUL-certified plug\u003c\/strong\u003e and certifications (CE, FCC, ROHS) support compliance and safe operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow it behaves in everyday use\u003c\/h2\u003e\n\u003cp\u003eSet the desired temperature on the top control, and the heater will actively warm until it reaches the target. If the water cools, it automatically resumes heating. The system’s self-regulating behavior is designed to minimize drastic temperature swings, while safety features help guard against overheating.\u003c\/p\u003e\n\n\u003ch2\u003eReal-life tips for best results\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTank sizing:\u003c\/strong\u003e 300W models suit roughly 30–60 gallon tanks; 500W units cover larger 50–90 gallon setups. Choose wattage based on your tank size.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlacing heat evenly:\u003c\/strong\u003e Mount the heater horizontally or vertically using three suction cups, ideally near the water inlet\/outlet.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActivation steps:\u003c\/strong\u003e Fully submerge the heater before powering on; allow 10–15 minutes for temperature equilibration after placement.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaintenance:\u003c\/strong\u003e Unplug before cleaning or water changes and wait at least 15 minutes to cool.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUsage guidance:\u003c\/strong\u003e Most tropical fish thrive around 76–80°F (24–27°C); adjust within the recommended range for your species.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications at a glance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 300W (30–60 gallon tanks); 500W option for 50–90 gallons.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 110–120V, 60Hz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e 68°F–94°F (20°C–34.5°C)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 17 in length, with a 2.6 cm glass tube and plastic housing of 3.3 cm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVolume range:\u003c\/strong\u003e Suitable for freshwater and marine setups within the stated gallon ranges\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eImportant reminders\u003c\/h2\u003e\n\u003cp\u003eTemperature differences can be ±5°F under certain conditions. Always confirm wattage and tank size before purchase. Ensure the heater is fully submerged, and avoid switches on during cleaning or water changes by unplugging first.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What tank size is best for the 300W model?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The 300W model is designed for 30–60 gallon tanks; use higher wattage for larger systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this heater suitable for both freshwater and saltwater?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it works in both freshwater and saltwater and includes a quartz glass sleeve for added protection.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ZHGSERVU","offers":[{"title":"Default Title","offer_id":40565584724097,"sku":"B08FZGR4HF","price":57.68,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0598\/4757\/3633\/files\/zhgsservu-aquarium-heater-300w-front-view.jpg?v=1766004180","url":"https:\/\/petiva.ca\/products\/zhgservu-100w-300w-500w-aquarium-heater-submersible-auto-thermostat-10-90-gallon-tank","provider":"Petiva","version":"1.0","type":"link"}