{"product_id":"hygger-aquarium-heater-300w-submersible-temperature-controller-for-40-70-gallon-tanks","title":"Hygger Aquarium Heater 300W — Submersible, Temperature Controller for 40–70 Gallon Tanks","description":"\u003cdiv\u003e\n  \u003ch2\u003eOverview\u003c\/h2\u003e\n  \u003cp\u003eHygger submersible aquarium heater is built to keep a dependable, even warmth in 40–70 gallon tanks. Available in wattages including 300W, 500W, 800W and 1000W, this heater pairs a precise temperature controller with robust safety features, making it a versatile choice for both freshwater and saltwater setups.\u003c\/p\u003e\n  \u003ch3\u003eStable heating and easy control\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eStable heating with a temperature range from 59 to 93 F in 0.5 F steps and a clear digital LED readout\u003c\/li\u003e\n    \u003cli\u003eEnergy saving auto frequency control lowers power by 10–30% near the target for consistent warmth\u003c\/li\u003e\n    \u003cli\u003eRed and green indicators show heating status at a glance for quick checks\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003ch3\u003eSafety and durability\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eExplosion-proof quartz glass and silicon carbide heat conductor deliver rapid heat transfer\u003c\/li\u003e\n    \u003cli\u003eAuto shut off when the set temperature is reached and an alarm if overheating occurs at 97.7 F\u003c\/li\u003e\n    \u003cli\u003eOut of water protection plus the APS self diagnostic that cuts power within 10 seconds if a fault is detected\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003ch3\u003eDesign and installation\u003c\/h3\u003e\n  \u003cp\u003eStrong suction cups secure the heater to the tank wall while keeping the unit fully submersible. The controller mounts outside the tank via Velcro for a neat setup, avoiding dead corners and risky entrapments for fish.\u003c\/p\u003e\n  \u003ch3\u003eReal world usage\u003c\/h3\u003e\n  \u003cp\u003eIn daily hobby use, this heater helps maintain a stable environment for tropical community tanks, quietly supporting temperature during cooler nights and helping delicate ecosystems in reef friendly setups.\u003c\/p\u003e\n  \u003ch3\u003eQuick specs at a glance\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePower options 300W 500W 800W 1000W\u003c\/li\u003e\n    \u003cli\u003eTank compatibility 40–70 gallons\u003c\/li\u003e\n    \u003cli\u003eTemperature range 59–93 F 0.5 F steps\u003c\/li\u003e\n    \u003cli\u003eDisplay digital LED with status indicators\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\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 suitable for the Hygger 300W heater?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Ideal for 40–70 gallon freshwater or saltwater tanks with adjustable temperature.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What safety features protect my aquarium?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Auto shut-off, overheat alarm, out-of-water protection, and APS power cut for faults.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"hygger","offers":[{"title":"Default Title","offer_id":53553481941321,"sku":"B0FRS96CK8","price":47.81,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/1781\/9465\/files\/hygger-aquarium-heater-300w-in-tank.jpg?v=1766308427","url":"https:\/\/petvita.co.uk\/products\/hygger-aquarium-heater-300w-submersible-temperature-controller-for-40-70-gallon-tanks","provider":"Petvita","version":"1.0","type":"link"}