{"product_id":"hygger-submersible-aquarium-heater-100w-300w-external-controller-led-display","title":"hygger Submersible Aquarium Heater 100W–300W | External Controller \u0026 LED Display","description":"\u003ch2\u003eSmart, Precise Heating for Your Aquarium\u003c\/h2\u003e\n\u003cp\u003eThe hygger Submersible Aquarium Heater combines compact power with a clear, easy-to-use control setup. Available in 100W, 150W, 200W, and 300W, it’s designed to fit a range of small and mid-size tanks, delivering steady warmth without taking up valuable space. The built-in LED display keeps current temperature and the target temperature in view, so you can assess conditions at a glance and adjust as needed.\u003c\/p\u003e\n\u003cp\u003eDesigned for both freshwater and marine environments, this heater emphasizes safety and reliability through thoughtful engineering and durable materials. Expect smooth, even heating across the water column thanks to the quartz glass and efficient heating elements, all wrapped in a robust build that stands up to routine use in hobbyist setups.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits at a Glance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmall and powerful:\u003c\/strong\u003e A compact 5.35 inch heater that fits tight spaces while delivering dependable warmth for 10–20 gallon tanks (100W) and larger setups with higher wattage options.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExternal temperature controller:\u003c\/strong\u003e Set temperature safely without wetting hands, with clear readings for current and target temps.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOut-of-water protection:\u003c\/strong\u003e Intelligent sensing stops heating when the unit isn’t fully immersed, reducing risk and maintenance hassle.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverheating protection \u0026amp; memory:\u003c\/strong\u003e The system prevents excessive heat and remembers your last setting after power loss, so you can pick up where you left off.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-tough construction:\u003c\/strong\u003e Durable quartz glass, nickel-chromium wire, and silicon carbide conduction for reliable, long-lasting performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReal-Life Scenarios and How It Helps\u003c\/h3\u003e\n\u003cp\u003eWhether you’re keeping a delicate Betta or balancing the needs of a small tropical setup, this heater provides a steady thermal baseline that supports healthy activity and comfort for your aquatic inhabitants. The external controller reduces the need to reach into the tank, and the indicator lights give quick feedback about heating status and stable temperatures. When you’re transporting or making routine adjustments, the heater’s protective features help you maintain a calm, monitored environment.\u003c\/p\u003e\n\u003cp\u003eFor hobbyists managing both freshwater and saltwater environments, choosing the right wattage is easier with the size guidance. The 100W unit is well-suited for smaller tanks, while the 150W, 200W, and 300W models cover larger volumes up to 48 gallons, helping you scale heating performance to your tank’s needs. The combination of precise control, safety features, and robust materials makes this line a practical option for daily use, seasonal changes, and hobbyist experiments alike.\u003c\/p\u003e\n\u003ch3\u003eChoosing the Right Wattage\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e100W for 10–20 gallon tanks\u003c\/li\u003e\n  \u003cli\u003e150W for up to ~26 gallons\u003c\/li\u003e\n  \u003cli\u003e200W for up to ~40 gallons\u003c\/li\u003e\n  \u003cli\u003e300W for up to ~48 gallons\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNote: Always match wattage to your tank size and consider ambient room temperature, tank depth, and livestock sensitivity when planning heating. This guidance helps you tailor warmth to your setup while keeping energy use reasonable and predictable.\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: Which tank sizes does the hygger Submersible Aquarium Heater fit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: 100W fits 10–20 gal; 150W up to 26 gal; 200W up to 40 gal; 300W up to 48 gal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What safety features are included?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Out-of-water protection, overheating protection, and a power-off memory function.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"hygger","offers":[{"title":"Default Title","offer_id":53555828752713,"sku":"B0CJJ48PLT","price":35.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/1781\/9465\/files\/hygger-submersible-heater-100w-led-display.jpg?v=1766366678","url":"https:\/\/petvita.co.uk\/products\/hygger-submersible-aquarium-heater-100w-300w-external-controller-led-display","provider":"Petvita","version":"1.0","type":"link"}