{"product_id":"freesea-300w-aquarium-heater-with-submersible-thermometer-40-60-gallon-tanks","title":"FREESEA 300W Aquarium Heater with Submersible Thermometer | 40–60 Gallon Tanks","description":"\u003cp\u003eMeet FREESEA's 300W aquarium heater, a reliable heating companion designed for mid- to large-sized home aquariums. The 13.5-inch heater is built to live fully submerged in 40–60 gallon tanks, where it works with your water circulation to deliver steady warmth. The setup includes a free diving thermometer, so you can observe the water temperature at a glance without extra gear. With a compact profile and durable construction, the unit integrates neatly behind rocks, driftwood, or tank decorations, helping you maintain a calm, natural-looking setup while keeping essential warmth within reach.\u003c\/p\u003e\n\n\u003ch2\u003eSmart, safe temperature control\u003c\/h2\u003e\n\u003cp\u003eAdjust a target between 63°F and 95°F, then rely on automatic constant-temperature operation. The heater turns on when water cools below the set point and stops when it reaches it, keeping fluctuations lower. An automatic safety shut-off and overheating protection add a layer of protection for daily use, so you can focus on your aquatic routine rather than constant tweaks.\u003c\/p\u003e\n\n\u003ch3\u003eKey specs at a glance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e300 watts of heating power for tanks in the 40–60 gallon range\u003c\/li\u003e\n  \u003cli\u003e13.5 inches long for discreet placement\u003c\/li\u003e\n  \u003cli\u003e110–120V operation with a 4-foot power cord\u003c\/li\u003e\n  \u003cli\u003eFully submersible design for submerged operation\u003c\/li\u003e\n  \u003cli\u003eTemperature range from 63°F to 95°F\u003c\/li\u003e\n  \u003cli\u003eAutomatic on\/off temperature control and overheating protection\u003c\/li\u003e\n  \u003cli\u003eFree diving thermometer included for quick temperature checks\u003c\/li\u003e\n  \u003cli\u003e12-month warranty and responsive after-sales service\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUsage and safety tips\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eThe heater must be fully submerged during operation.\u003c\/li\u003e\n  \u003cli\u003eUnplug before cleaning or performing water changes.\u003c\/li\u003e\n  \u003cli\u003eChoose the right wattage according to the size chart.\u003c\/li\u003e\n  \u003cli\u003ePosition the unit away from direct water flow to promote even heating.\u003c\/li\u003e\n  \u003cli\u003eKeep the device out of reach of children; follow safety guidelines for older devices.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eNotes: The heater is designed for 110–120V operation and includes a free diving thermometer for quick readouts. For safety, unplug during maintenance and follow the size chart to select the appropriate wattage. The product carries a 12-month warranty and 24-hour professional after-sales support, offering peace of mind for busy hobbyists.\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 this heater designed for?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Designed for 40–60 gallon aquariums; verify with the size chart before purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are there safety or maintenance requirements?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The heater is fully submersible. Unplug before cleaning; includes a thermometer and a 12-month warranty.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"FREESEA","offers":[{"title":"Default Title","offer_id":40565040742529,"sku":"B07SN23G2X","price":63.42,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0598\/4757\/3633\/files\/freesea-300w-aquarium-heater.jpg?v=1765971519","url":"https:\/\/petiva.ca\/products\/freesea-300w-aquarium-heater-with-submersible-thermometer-40-60-gallon-tanks","provider":"Petiva","version":"1.0","type":"link"}