{"product_id":"dattoo-100w-small-aquarium-heater","title":"DaToo Small Aquarium Heater, 100W, submersible, LED temperature display","description":"\u003cp\u003eThis small aquarium heater runs at 100 W and is made for tanks of 10 to 20 gallons, in fresh water or salt water. DaToo builds it around a three-point temperature sensing system, and a display on the outside of the tank shows the water temperature as it stands. The heater has to sit fully underwater while it runs.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e100 W heater for 10–20 gallon aquariums\u003c\/li\u003e\n\u003cli\u003eWorks in fresh water and salt water\u003c\/li\u003e\n\u003cli\u003eThree temperature sensing points and a ±1°F tolerance\u003c\/li\u003e\n\u003cli\u003eDisplay shows the current water temperature\u003c\/li\u003e\n\u003cli\u003eABS shell and thicker quartz glass housing\u003c\/li\u003e\n\u003cli\u003eMust be submerged 100% when in use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDoes this heater suit your tank?\u003c\/h2\u003e\u003cp\u003eThe heater is sized for aquariums between 10 and 20 gallons, so a smaller bowl or a much larger tank falls outside that range. Both fresh water and salt water setups are covered by the manufacturer's stated use.\u003c\/p\u003e\u003cp\u003ePlacement is a hard requirement rather than a preference: the unit must be submerged 100% in water whenever it is working. Check that the spot you have in mind lets the whole heater sit below the waterline, and that the cable reaches from the tank to your outlet.\u003c\/p\u003e\u003ch2\u003eA 100 W heater with an external controller\u003c\/h2\u003e\u003cp\u003eThe heating element is rated at 100 W, and the temperature is set on an external controller that stays outside the fish tank. That keeps the adjustment dial out of the water while the heater itself sits submerged.\u003c\/p\u003e\u003cp\u003eHeating follows the set point automatically. The heater stops once the water reaches the set temperature and starts again when the water drops below it, so the on-and-off cycle runs without you turning anything.\u003c\/p\u003e\u003ch2\u003eHousing, sensing and display\u003c\/h2\u003e\u003cp\u003eThe casing combines a high strength ABS shell with thicker quartz glass, and the manufacturer lists the heater as high temperature resistant. Three temperature sensing points feed the control system, and the tolerance is ±1°F.\u003c\/p\u003e\u003cp\u003eA real-time display reports the water temperature, which the manufacturer says removes the need to buy a separate thermometer. The reading is part of the heater rather than an add-on.\u003c\/p\u003e\u003ch2\u003eQuestions buyers ask about this heater\u003c\/h2\u003e\u003ch3\u003eWhat size tank is the 100 W heater made for?\u003c\/h3\u003e\u003cp\u003eThe manufacturer rates it for aquariums of 10 to 20 gallons.\u003c\/p\u003e\u003ch3\u003eCan it go in a salt water tank?\u003c\/h3\u003e\u003cp\u003eYes. The heater is listed for both fresh water and salt water.\u003c\/p\u003e\u003ch3\u003eHow far can the water temperature drift from the setting?\u003c\/h3\u003e\u003cp\u003eBy ±1°F, which is the stated temperature accuracy of the control system.\u003c\/p\u003e\u003ch3\u003eDoes it need to be fully underwater?\u003c\/h3\u003e\u003cp\u003eYes. It must be submerged 100% in water whenever it is in use.\u003c\/p\u003e\u003ch3\u003eDo I need a separate thermometer?\u003c\/h3\u003e\u003cp\u003eNo. The heater has a real-time water temperature display, and the manufacturer says an extra thermometer is not needed.\u003c\/p\u003e","brand":"DaToo","offers":[{"title":"Default Title","offer_id":44475638317119,"sku":null,"price":43.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/2409\/1199\/files\/datoo-aquarium-heater-100w.jpg?v=1794671402","url":"https:\/\/dogjointly.com\/products\/dattoo-100w-small-aquarium-heater","provider":"DogJointly","version":"1.0","type":"link"}