{"product_id":"fluval-pre-set-aquarium-heater-50w-p50","title":"Fluval Pre Set Aquarium Heater 50w P50","description":"\u003cp\u003e\u003cstrong\u003eA fixed 50 W heater that holds nano tanks at 24–26°C without any dial to set.\u003c\/strong\u003e The Fluval P50 is a preset submersible heater built for aquariums up to 50 litres, aimed at anyone who wants stable, tropical-community temperatures without adjusting a thermostat.\u003c\/p\u003e\u003cp\u003eBecause the temperature is fixed at the factory, there's nothing to calibrate and nothing to get wrong at setup — drop it in, plug it in, and the LED confirms it's running. That also means it's the wrong choice if your fish need a temperature outside 24–26°C, or if you want to fine-tune the setting yourself.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreset to 24–26°C (76–78°F)\u003c\/strong\u003e — no dial, no calibration, one less thing to get wrong.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShatterproof polymer body\u003c\/strong\u003e — replaces fragile glass construction, so a knock against gravel or décor won't crack the heater.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully submersible\u003c\/strong\u003e — can be mounted horizontally or vertically, giving more placement options in small tanks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED running indicator\u003c\/strong\u003e — a glance tells you it's powered and heating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreshwater and saltwater safe\u003c\/strong\u003e — the same unit works in a nano reef or a community freshwater tank.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFluval part number\u003c\/th\u003e\n\u003ctd\u003eA745\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWattage\u003c\/th\u003e\n\u003ctd\u003e50 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePreset temperature\u003c\/th\u003e\n\u003ctd\u003e24–26°C (76–78°F), fixed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended tank size\u003c\/th\u003e\n\u003ctd\u003eUp to 50 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003e15.5 x 4 x 2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConstruction\u003c\/th\u003e\n\u003ctd\u003eShatterproof polymer, fully submersible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThermostat type\u003c\/th\u003e\n\u003ctd\u003eFixed preset (not adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater and marine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eWill it fit my tank?\u003c\/h3\u003e\u003cp\u003eFluval rates the P50 for aquariums up to 50 litres in a normally heated room. In a cold garage, laundry, or an unheated south-facing room over an Australian winter, the same 50 W has to work harder to close a bigger gap between room and tank temperature, so treat 50 L as a ceiling rather than a target in a cold location — size down, or step up to a higher-wattage Fluval preset heater if you're near that limit and the room runs cold.\u003c\/p\u003e\u003ch3\u003eWhich Fluval preset heater do I need?\u003c\/h3\u003e\u003cp\u003eThe P-Series runs as a wattage ladder, each rated to a maximum tank size in a normally heated room: the P50 shown here is 50 W for up to 50 L, with larger wattages in the range covering bigger tanks. If your tank is close to the 50 L ceiling, or the room it's in runs cold, size up rather than sitting at the limit.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cp\u003eSuitable for nano and small community freshwater tanks, and small marine or reef tanks up to 50 L, needing a stable 24–26°C. Not suitable where fish need a specific temperature outside that preset range (some killifish, goldfish and cold-water natives), and not adjustable if your target temperature changes.\u003c\/p\u003e\u003ch3\u003eSafety\u003c\/h3\u003e\u003cp\u003eMains-powered and fully submersible: fit an RCD\/safety switch on the circuit it runs from, and unplug it before doing any tank maintenance that lowers the water level below the heater. Let the heater cool for a few minutes after unplugging before handling it or lifting it out of the water — like all aquarium heaters it can still be hot to the touch immediately after use.\u003c\/p\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eNo user-serviceable parts. Wipe algae or mineral build-up from the body periodically so heat transfers efficiently to the water. Do not run the heater out of water.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eBacked by Fluval's manufacturer warranty against defects, in addition to your rights under the Australian Consumer Law. Standard parcel delivery — not a dangerous-goods or oversized item.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eCan I adjust the temperature?\u003c\/h4\u003e\u003cp\u003eNo. The P50 is factory-preset to 24–26°C with no dial. If you need a different or adjustable temperature, choose one of Fluval's adjustable heater ranges instead.\u003c\/p\u003e\u003ch4\u003eWill it work in a marine or reef tank?\u003c\/h4\u003e\u003cp\u003eYes, the P50 is rated for both freshwater and saltwater use.\u003c\/p\u003e\u003ch4\u003eCan I mount it horizontally?\u003c\/h4\u003e\u003cp\u003eYes, it's fully submersible and can be positioned horizontally or vertically, which helps in shorter nano tanks.\u003c\/p\u003e\u003ch4\u003eWhat size tank is it good for?\u003c\/h4\u003e\u003cp\u003eUp to 50 litres in a room that stays at a normal indoor temperature. In a colder spot, keep well under that ceiling.\u003c\/p\u003e\u003ch4\u003eDoes it need a separate thermostat or controller?\u003c\/h4\u003e\u003cp\u003eNo — the thermostat is built in and fixed, so no separate controller is required or usable with this model.\u003c\/p\u003e","brand":"Fluval","offers":[{"title":"Default Title","offer_id":55293309387043,"sku":"MRN26","price":43.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/fluval-pre-set-aquarium-heat-43875501113635.webp?v=1790236916","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/fluval-pre-set-aquarium-heater-50w-p50","provider":"Nicks AOT","version":"1.0","type":"link"}