{"product_id":"eheim-jager-250w-submersible-aquarium-heater","title":"Eheim Jager 250W Submersible Aquarium Heater","description":"\u003cp data-end=\"885\" data-start=\"556\"\u003eThe \u003cstrong data-end=\"631\" data-start=\"560\"\u003e\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eEheim\u003c\/span\u003e\u003c\/span\u003e Jager 250W Submersible Heater\u003c\/strong\u003e is a \u003cstrong data-end=\"673\" data-start=\"637\"\u003ehigh-performance aquarium heater\u003c\/strong\u003e designed for \u003cstrong data-end=\"703\" data-start=\"687\"\u003elarger tanks\u003c\/strong\u003e that require stable, accurate temperature control. Each unit is \u003cstrong data-end=\"793\" data-start=\"768\"\u003elaboratory calibrated\u003c\/strong\u003e to ensure precision, helping maintain ideal conditions for fish, plants, and invertebrates.\u003c\/p\u003e\n\u003cp data-end=\"1068\" data-start=\"887\"\u003eBuilt with \u003cstrong data-end=\"937\" data-start=\"898\"\u003eshatterproof, shock-resistant glass\u003c\/strong\u003e, the Eheim Jager heater is fully submersible and trusted worldwide for its \u003cstrong data-end=\"1067\" data-start=\"1013\"\u003equiet operation, durability, and long service life\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2 data-end=\"1105\" data-start=\"1075\"\u003e\u003cstrong data-end=\"1105\" data-start=\"1078\"\u003eKey Features \u0026amp; Benefits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-end=\"1392\" data-start=\"1107\"\u003e 250W heater for medium to large aquariums\u003cbr data-end=\"1153\" data-start=\"1150\"\u003e Laboratory calibrated for accuracy\u003cbr data-end=\"1192\" data-start=\"1189\"\u003e Fully submersible design\u003cbr data-end=\"1221\" data-start=\"1218\"\u003e Shatterproof, shock-resistant glass\u003cbr data-end=\"1261\" data-start=\"1258\"\u003e Adjustable temperature control\u003cbr data-end=\"1296\" data-start=\"1293\"\u003e Automatic shut-off when removed from water\u003cbr data-end=\"1343\" data-start=\"1340\"\u003e Suitable for freshwater \u0026amp; saltwater aquariums\u003c\/p\u003e\n\u003ch2 data-end=\"1427\" data-start=\"1399\"\u003e\u003cstrong data-end=\"1427\" data-start=\"1402\"\u003eRecommended Tank Size\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-end=\"1523\" data-start=\"1429\"\u003e\n\u003cli data-end=\"1523\" data-start=\"1429\"\u003e\n\u003cp data-end=\"1523\" data-start=\"1431\"\u003e\u003cstrong data-end=\"1445\" data-start=\"1431\"\u003eIdeal for:\u003c\/strong\u003e ~6590 gallon aquariums\u003cbr data-end=\"1472\" data-start=\"1469\"\u003e\u003cem data-end=\"1523\" data-start=\"1472\"\u003e(Depends on room temperature and tank insulation)\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1596\" data-start=\"1525\"\u003e💡 For very large tanks, consider using \u003cstrong data-end=\"1580\" data-start=\"1565\"\u003etwo heaters\u003c\/strong\u003e for redundancy.\u003c\/p\u003e\n\u003ch2 data-end=\"1627\" data-start=\"1603\"\u003e\u003cstrong data-end=\"1627\" data-start=\"1606\"\u003eTemperature Range\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-end=\"1672\" data-start=\"1631\"\u003e\n\u003cstrong data-end=\"1652\" data-start=\"1631\"\u003eAdjustable Range:\u003c\/strong\u003e 6593°F (1834°C)\u003c\/li\u003e\n\u003cli data-end=\"1729\" data-start=\"1675\"\u003eEasy-to-read calibration ring for precise adjustment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1785\" data-start=\"1731\"\u003e Stable temperatures reduce stress and disease risk.\u003c\/p\u003e\n\u003ch2 data-end=\"1816\" data-start=\"1792\"\u003e\u003cstrong data-end=\"1816\" data-start=\"1795\"\u003eInstallation Tips\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-end=\"1874\" data-start=\"1820\"\u003ePlace near filter outflow for even heat distribution\u003c\/li\u003e\n\u003cli data-end=\"1912\" data-start=\"1877\"\u003eFully submerge before plugging in\u003c\/li\u003e\n\u003cli data-end=\"1975\" data-start=\"1915\"\u003eAllow heater to acclimate 1520 minutes before powering on\u003c\/li\u003e\n\u003cli data-end=\"2028\" data-start=\"1978\"\u003eUse a thermometer to verify temperature accuracy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2076\" data-start=\"2030\"\u003e⚠️ Handle glass carefully during installation.\u003c\/p\u003e\n\u003ch2 data-end=\"2110\" data-start=\"2083\"\u003e\u003cstrong data-end=\"2110\" data-start=\"2086\"\u003eCompatible Aquariums\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-end=\"2243\" data-start=\"2112\"\u003e Freshwater aquariums\u003cbr data-end=\"2137\" data-start=\"2134\"\u003e Saltwater \u0026amp; reef aquariums\u003cbr data-end=\"2168\" data-start=\"2165\"\u003e Planted tanks\u003cbr data-end=\"2186\" data-start=\"2183\"\u003e African cichlid tanks\u003cbr data-end=\"2212\" data-start=\"2209\"\u003e Quarantine \u0026amp; hospital tanks\u003c\/p\u003e\n\u003ch2 data-end=\"2272\" data-start=\"2250\"\u003e\u003cstrong data-end=\"2272\" data-start=\"2253\"\u003eProduct Details\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-end=\"2294\" data-start=\"2276\"\u003e\n\u003cstrong data-end=\"2286\" data-start=\"2276\"\u003eBrand:\u003c\/strong\u003e Eheim\u003c\/li\u003e\n\u003cli data-end=\"2315\" data-start=\"2297\"\u003e\n\u003cstrong data-end=\"2307\" data-start=\"2297\"\u003eModel:\u003c\/strong\u003e Jager\u003c\/li\u003e\n\u003cli data-end=\"2342\" data-start=\"2318\"\u003e\n\u003cstrong data-end=\"2330\" data-start=\"2318\"\u003eWattage:\u003c\/strong\u003e 250 Watts\u003c\/li\u003e\n\u003cli data-end=\"2384\" data-start=\"2345\"\u003e\n\u003cstrong data-end=\"2354\" data-start=\"2345\"\u003eType:\u003c\/strong\u003e Submersible Aquarium Heater\u003c\/li\u003e\n\u003cli data-end=\"2421\" data-start=\"2387\"\u003e\n\u003cstrong data-end=\"2400\" data-start=\"2387\"\u003eMaterial:\u003c\/strong\u003e Shatterproof glass\u003c\/li\u003e\n\u003cli data-end=\"2467\" data-start=\"2424\"\u003e\n\u003cstrong data-end=\"2442\" data-start=\"2424\"\u003eAquarium Type:\u003c\/strong\u003e Freshwater \u0026amp; Saltwater\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-end=\"2511\" data-start=\"2474\"\u003e\u003cstrong data-end=\"2511\" data-start=\"2477\"\u003eFAQs Eheim Jager 250W Heater\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-end=\"2599\" data-start=\"2513\"\u003e\u003cstrong data-end=\"2544\" data-start=\"2513\"\u003eQ: Is this heater accurate?\u003c\/strong\u003e\u003cbr data-end=\"2547\" data-start=\"2544\"\u003eA: Yes. Each heater is lab calibrated for precision.\u003c\/p\u003e\n\u003cp data-end=\"2685\" data-start=\"2601\"\u003e\u003cstrong data-end=\"2641\" data-start=\"2601\"\u003eQ: Can it be installed horizontally?\u003c\/strong\u003e\u003cbr data-end=\"2644\" data-start=\"2641\"\u003eA: Yes, as long as it is fully submerged.\u003c\/p\u003e\n\u003cp data-end=\"2766\" data-start=\"2687\"\u003e\u003cstrong data-end=\"2720\" data-start=\"2687\"\u003eQ: Is it safe for reef tanks?\u003c\/strong\u003e\u003cbr data-end=\"2723\" data-start=\"2720\"\u003eA: Yes. It is reef-safe when used properly.\u003c\/p\u003e\n\u003cp data-end=\"2861\" data-start=\"2768\"\u003e\u003cstrong data-end=\"2814\" data-start=\"2768\"\u003eQ: Does it turn off if removed from water?\u003c\/strong\u003e\u003cbr data-end=\"2817\" data-start=\"2814\"\u003eA: Yes. It has an automatic safety shut-off.\u003c\/p\u003e\n\u003cp data-end=\"2953\" data-start=\"2863\"\u003e\u003cstrong data-end=\"2895\" data-start=\"2863\"\u003eQ: Do I need a heater guard?\u003c\/strong\u003e\u003cbr data-end=\"2898\" data-start=\"2895\"\u003eA: Recommended for tanks with large or aggressive fish.\u003c\/p\u003e","brand":"Tropical Treasures Wyo LLC","offers":[{"title":"Default Title","offer_id":53080203952341,"sku":null,"price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/4545\/8133\/files\/720686361409.jpg?v=1770072195","url":"https:\/\/tropicaltreasureswyo.com\/products\/eheim-jager-250w-submersible-aquarium-heater","provider":"Tropical Treasures Wyo LLC","version":"1.0","type":"link"}