{"product_id":"fluval-m-series-aquarium-heaters","title":"Fluval M Series Aquarium Heaters","description":"\u003cp\u003eThe \u003cstrong\u003eFluval M Series\u003c\/strong\u003e brings a designer touch to aquarium heating. Each heater is wrapped in heat and shock resistant borosilicate glass with a subtle mirror finish that reflects the colors of your aquarium, so it quietly blends into the background instead of standing out as a black tube. Set your exact temperature anywhere from 66 to 86 F (19 to 30 C) with the top dial, and enjoy the reliability of a heater crafted in Italy. Safe for both freshwater and saltwater.\u003c\/p\u003e\n\u003cp\u003eSetting up a small tank? The preset \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-p-series-aquarium-heaters\" style=\"color:#666;font-weight:600;text-decoration:underline;\"\u003eFluval P Series\u003c\/a\u003e covers aquariums up to 15 gallons. Prefer fully electronic digital control? See the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-t-series-aquarium-heaters\" style=\"color:#666;font-weight:600;text-decoration:underline;\"\u003eFluval T Series\u003c\/a\u003e. Pair any heater with a \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/squeakys-digital-thermometer-aquarium-lcd-probe\" style=\"color:#666;font-weight:600;text-decoration:underline;\"\u003edigital thermometer\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3 style=\"margin:16px 0 6px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"margin:4px 0 4px;padding-left:20px;line-height:1.5;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eMirror-glass that blends in.\u003c\/strong\u003e The reflective borosilicate exterior picks up the colors of your aquascape, so the heater visually disappears into the tank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable 66 to 86 F (19 to 30 C).\u003c\/strong\u003e Dial in the precise temperature your fish, shrimp, or corals prefer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat and shock resistant.\u003c\/strong\u003e Thick borosilicate glass stands up to temperature swings and everyday handling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrafted in Italy.\u003c\/strong\u003e Built with premium components for consistent, long-lasting performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully submersible.\u003c\/strong\u003e Mount it vertically or horizontally, completely underwater, near good flow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFresh or salt water.\u003c\/strong\u003e Rated for freshwater and saltwater aquariums alike.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:16px 0 6px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eChoose Your Size\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;margin:8px 0 4px;font-size:0.95em;\"\u003e\n\u003ctr\u003e\n\u003cth style=\"background:#666;color:#fff;text-align:left;padding:7px 10px;border:1px solid #666;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"background:#666;color:#fff;text-align:left;padding:7px 10px;border:1px solid #666;\"\u003eAquarium size\u003c\/th\u003e\n\u003cth style=\"background:#666;color:#fff;text-align:left;padding:7px 10px;border:1px solid #666;\"\u003eWattage\u003c\/th\u003e\n\u003cth style=\"background:#666;color:#fff;text-align:left;padding:7px 10px;border:1px solid #666;\"\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eM50\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #ddd;\"\u003eUp to 15 US gal\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #ddd;\"\u003e50 W\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #ddd;\"\u003e$35.99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eM100\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #ddd;\"\u003eUp to 30 US gal\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #ddd;\"\u003e100 W\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #ddd;\"\u003e$37.99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eM150\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #ddd;\"\u003eUp to 45 US gal\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #ddd;\"\u003e150 W\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #ddd;\"\u003e$40.99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eM200\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #ddd;\"\u003eUp to 65 US gal\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #ddd;\"\u003e200 W\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #ddd;\"\u003e$42.99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eM300\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #ddd;\"\u003eUp to 80 US gal\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #ddd;\"\u003e300 W\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #ddd;\"\u003e$44.99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:4px 0 0;\"\u003eMatch the wattage to your tank volume, and size up if your room runs cold. On larger aquariums, two heaters give more even coverage and a safety margin.\u003c\/p\u003e\n\u003ch3 style=\"margin:16px 0 6px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eHow to Use\u003c\/h3\u003e\n\u003cp\u003ePlace the heater fully underwater near good flow, such as beside a filter outlet, so heated water circulates evenly. Let it sit for 15 to 30 minutes before powering on so the glass matches the water temperature. Set the top dial to your target, allow the tank to stabilize, and confirm with a thermometer. Because the M Series is glass, handle it gently and always unplug and let it cool before removing it from the water.\u003c\/p\u003e\n\u003ch3 style=\"margin:16px 0 6px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat makes the M Series different?\u003c\/strong\u003e\u003cbr\u003eIts mirror-finish borosilicate glass reflects the aquarium around it, so the heater blends in rather than standing out. It is adjustable and crafted in Italy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat temperature range does it cover?\u003c\/strong\u003e\u003cbr\u003eYou can set it anywhere from 66 to 86 F (19 to 30 C) using the top dial.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it safe for saltwater?\u003c\/strong\u003e\u003cbr\u003eYes. Every M Series heater is rated for both freshwater and saltwater aquariums.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich wattage should I choose?\u003c\/strong\u003e\u003cbr\u003eMatch the model to your tank size: M50 for up to 15 gallons through M300 for up to 80 gallons. Size up in a cold room, or run two smaller heaters on a large tank.\u003c\/p\u003e","brand":"Fluval","offers":[{"title":"M50 50w (15 Gal)","offer_id":48908484051163,"sku":"A781","price":35.99,"currency_code":"USD","in_stock":true},{"title":"M100 100w (30 Gal)","offer_id":48908484083931,"sku":"A782","price":37.99,"currency_code":"USD","in_stock":true},{"title":"M150 150w (45 Gal)","offer_id":48908484116699,"sku":"A783","price":40.99,"currency_code":"USD","in_stock":true},{"title":"M200 200w (65 Gal)","offer_id":48908484149467,"sku":"A784","price":42.99,"currency_code":"USD","in_stock":true},{"title":"M300 300w (80 Gal)","offer_id":48908484182235,"sku":"A787","price":44.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_3c979610-bb15-4a0c-bc64-2a16f67ca9d0.jpg?v=1782420392","url":"https:\/\/squeakysaquatics.com\/products\/fluval-m-series-aquarium-heaters","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}