{"title":"Aquarium Heaters \u0026 Thermometers","description":"\u003ch1\u003eAquarium Heaters \u0026amp; Thermometers\u003c\/h1\u003e\n\n\u003cp\u003eWater temperature is one of the most critical and least forgiving variables in aquarium keeping. Most tropical freshwater and saltwater fish are native to environments where water temperature remains stable within a narrow range year-round. Even a two to three degree shift outside that range can suppress immune function, disrupt metabolism, and trigger disease. Aquarium heaters maintain the consistent warmth fish require, while fish tank thermometers provide the accurate, real-time monitoring needed to verify that your heater is performing correctly. Browse our selection of aquarium heaters and thermometers designed for reliable temperature control in freshwater and saltwater tanks of all sizes.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Temperature Control Matters in an Aquarium\u003c\/h2\u003e\n\n\u003cp\u003eFish are ectothermic - their body temperature is regulated by the surrounding water. This means every biological process, from digestion and immune response to reproduction and oxygen uptake, is directly tied to water temperature. Tropical species such as bettas, discus, and most reef fish require water consistently between 75 and 82 degrees Fahrenheit. Coldwater species such as goldfish and white cloud mountain minnows thrive at lower temperatures between 60 and 72 degrees. Sudden temperature drops caused by water changes, room temperature fluctuations, or heater failure are among the most common causes of fish stress and disease outbreaks. A reliable aquarium heater paired with an accurate thermometer is the most effective safeguard against temperature-related losses.\u003c\/p\u003e\n\n\u003ch2\u003eBenefits of Quality Aquarium Heaters and Thermometers\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConsistent thermal stability\u003c\/strong\u003e - Quality aquarium heaters maintain water temperature within one degree of the set point, preventing the fluctuations that stress fish and compromise immune function\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecies-appropriate temperature ranges\u003c\/strong\u003e - Adjustable heaters allow precise temperature setting to match the specific requirements of tropical, coldwater, or marine fish species\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic regulation\u003c\/strong\u003e - Thermostat-controlled heaters cycle on and off to maintain the target temperature without manual intervention, even as ambient room temperature changes seasonally\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety features\u003c\/strong\u003e - Modern aquarium heaters include auto shut-off protection that deactivates the heating element if the unit is removed from water, preventing overheating and glass cracking\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccurate monitoring\u003c\/strong\u003e - Digital thermometers provide precise temperature readings to within 0.1 to 0.5 degrees Fahrenheit, allowing early detection of heater malfunction before fish are affected\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShatter-resistant construction\u003c\/strong\u003e - Heaters constructed from quartz glass or reinforced borosilicate glass resist thermal shock and physical impact better than standard glass units\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Choose the Right Aquarium Heater and Thermometer\u003c\/h2\u003e\n\n\u003cp\u003eSelecting the correct heater and thermometer depends on your tank volume, the fish species you keep, and the ambient temperature of the room where the aquarium is located.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMatch wattage to tank volume\u003c\/strong\u003e - A general guideline is 3 to 5 watts per gallon of water. A 30-gallon tank typically requires a 100 to 150-watt heater. In cooler rooms or during winter months, use the higher end of the wattage range to ensure the heater can maintain temperature against ambient heat loss\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConsider using two heaters\u003c\/strong\u003e - For tanks over 40 gallons, two smaller heaters placed at opposite ends of the tank provide more even heat distribution and redundancy - if one heater fails, the other maintains partial temperature while you replace it\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChoose adjustable over preset for most setups\u003c\/strong\u003e - Adjustable heaters allow you to dial in the exact temperature your fish require. Preset heaters are convenient for species with standard tropical temperature needs but offer no flexibility if requirements change\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelect thermometer type based on accuracy needs\u003c\/strong\u003e - Digital thermometers with external probes provide the most accurate readings and are recommended for sensitive species or reef systems. Stick-on liquid crystal thermometers are convenient for quick checks but are less precise and can be affected by ambient room temperature\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify heater placement\u003c\/strong\u003e - Submersible heaters should be positioned near the filter intake or return to distribute heated water evenly throughout the tank. Avoid placing heaters directly on substrate where heat concentration can damage the unit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTypes of Aquarium Heaters \u0026amp; Thermometers\u003c\/h2\u003e\n\n\u003ch3\u003eSubmersible Heaters\u003c\/h3\u003e\n\u003cp\u003eSubmersible aquarium heaters are fully waterproof units designed to operate completely underwater, mounted horizontally or at an angle near the bottom of the tank. Full submersion provides more consistent heat distribution than hang-on heaters that sit partially above the waterline, and allows flexible positioning to optimize water circulation around the heating element. Submersible heaters are the most widely used heater type and are available in wattages from 25 watts for nano tanks to 300 watts or more for large aquariums. Most submersible heaters include an integrated thermostat and a visible temperature indicator on the adjustment dial. They are suitable for freshwater and saltwater use and are compatible with most standard aquarium setups.\u003c\/p\u003e\n\n\u003ch3\u003ePreset Heaters\u003c\/h3\u003e\n\u003cp\u003ePreset aquarium heaters are factory-calibrated to maintain a fixed temperature - typically 78 degrees Fahrenheit - without any user adjustment. They are compact, simple to install, and well-suited for small tanks housing tropical community fish, bettas, or other species with standard temperature requirements. Preset heaters eliminate the risk of accidental temperature misconfiguration and are a reliable choice for beginner aquarium keepers who do not need temperature flexibility. They are not appropriate for species requiring temperatures outside the preset range or for tanks where temperature adjustment may be needed seasonally or during treatment protocols.\u003c\/p\u003e\n\n\u003ch3\u003eAdjustable Heaters\u003c\/h3\u003e\n\u003cp\u003eAdjustable aquarium heaters feature a user-controlled thermostat dial or digital interface that allows temperature to be set within a defined range - typically 65 to 93 degrees Fahrenheit. This flexibility makes them suitable for a wide range of fish species, from coldwater setups to high-temperature tropical and reef systems. Adjustable heaters are the preferred choice for experienced hobbyists, species-specific tanks, and any setup where temperature requirements may change over time. Higher-end adjustable heaters include external controllers with digital displays that allow precise temperature setting and real-time monitoring without removing the heater from the tank.\u003c\/p\u003e\n\n\u003ch3\u003eDigital Thermometers\u003c\/h3\u003e\n\u003cp\u003eDigital aquarium thermometers provide precise temperature readings using a submersible probe connected to an external display unit mounted outside the tank. They offer accuracy to within 0.1 to 0.5 degrees Fahrenheit and are significantly more reliable than analog or liquid crystal alternatives. Many digital thermometers include high and low temperature alarms that alert the keeper when water temperature moves outside a set range - a critical safety feature for sensitive species or unattended tanks. Digital thermometers are recommended for reef aquariums, discus tanks, breeding setups, and any system where precise temperature monitoring is essential. The external display allows temperature to be checked at a glance without disturbing the tank.\u003c\/p\u003e\n\n\u003ch3\u003eStick-On Thermometers\u003c\/h3\u003e\n\u003cp\u003eStick-on liquid crystal thermometers adhere to the outside of the aquarium glass and display water temperature through a color-changing strip that responds to heat conducted through the glass. They are inexpensive, require no installation beyond adhesion to the tank exterior, and provide a continuous visual temperature reference without any components inside the water. Stick-on thermometers are best used as a secondary monitoring tool alongside a more accurate digital thermometer, as their readings can be influenced by ambient room temperature and direct sunlight. They are a practical choice for low-maintenance freshwater tanks where approximate temperature monitoring is sufficient and precise accuracy is not critical.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3\u003eWhat wattage aquarium heater do I need?\u003c\/h3\u003e\n\u003cp\u003eThe standard guideline is 3 to 5 watts per gallon of water. For a 20-gallon tank, a 75 to 100-watt heater is appropriate. For tanks in cooler rooms or during winter months, use the higher end of the range. For tanks over 40 gallons, consider using two heaters of equal wattage placed at opposite ends of the tank for more even heat distribution and built-in redundancy.\u003c\/p\u003e\n\n\u003ch3\u003eHow accurate are aquarium thermometers?\u003c\/h3\u003e\n\u003cp\u003eAccuracy varies significantly by type. Digital thermometers with submersible probes are the most accurate, typically reading within 0.1 to 0.5 degrees Fahrenheit of actual water temperature. Stick-on liquid crystal thermometers are less precise and can read one to three degrees off actual water temperature depending on ambient conditions. For sensitive species or reef systems, a digital thermometer is strongly recommended.\u003c\/p\u003e\n\n\u003ch3\u003eCan I use one heater for a large aquarium?\u003c\/h3\u003e\n\u003cp\u003eA single heater can maintain temperature in larger tanks, but two smaller heaters are generally recommended for tanks over 40 gallons. Two heaters provide more even heat distribution across the full tank volume and offer redundancy - if one heater fails, the second maintains partial temperature while the faulty unit is replaced. This is particularly important for sensitive species where even brief temperature drops can cause stress or disease.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I know if my aquarium heater is working correctly?\u003c\/h3\u003e\n\u003cp\u003eMonitor water temperature daily with a reliable thermometer and compare it to your heater's set point. Most heaters have an indicator light that shows when the heating element is active. If the thermometer reading consistently differs from the set point by more than one to two degrees, the heater's thermostat may be inaccurate and the unit should be recalibrated or replaced. Regular temperature monitoring is the most reliable way to detect heater malfunction before it affects fish.\u003c\/p\u003e\n\n\u003ch3\u003eIs it safe to leave an aquarium heater on all the time?\u003c\/h3\u003e\n\u003cp\u003eYes. Thermostat-controlled aquarium heaters are designed to run continuously, cycling on and off automatically to maintain the set temperature. They should not be unplugged during normal operation. The exception is during water changes - submersible heaters should be unplugged before the water level drops below the minimum submersion line to prevent the heating element from overheating in air. Most modern heaters include auto shut-off protection for this scenario, but unplugging during water changes remains best practice.\u003c\/p\u003e\n\n\u003ch2\u003eFind the Right Aquarium Heater and Thermometer for Your Tank\u003c\/h2\u003e\n\n\u003cp\u003eBrowse our full selection of aquarium heaters and fish tank thermometers to find the right temperature control and monitoring solution for your setup. Whether you need a compact preset heater for a betta tank, a high-wattage adjustable unit for a large cichlid aquarium, or a precision digital thermometer for a reef system, our range covers every tank size and fish species requirement.\u003c\/p\u003e","products":[{"product_id":"aquatop-mantis-mini-heater-preset-77f-1ea-10-w","title":"Aquatop Mantis Mini Heater Preset 77F 1ea\/10 W","description":"\u003cp\u003eAquatop's Mantis Mini Aquarium Heater's compact design allows for versatile placement in small aquariums. Each unit has a built-in electronic thermostat preset to 77 degrees Fahrenheit for precise temperature-controlled accuracy of ±1.8 degrees Fahrenheit. When the target temperature of the heater has been achieved, the unit will shut down and stop heating the water. \u003cbr\u003e\u003cbr\u003eConstructed from a heat-resistant material, the Mantis Mini Heater will heat your aquarium water quickly and accurately, plus the included suction cups allow quick and easy installation. \u003cbr\u003eThe Mantis Mini 10W is suitable for aquariums up to 3-gallons. \u003cbr\u003eMade with heat-resistant material Shuts down when target temperature is reached Heats quickly \u0026amp; accurately Includes suction cups for quick installation Ideal for nano aquariums up to 3-gallons\u003cbr\u003e\u003cbr\u003eSold in Qty of: 1\u003c\/p\u003e","brand":"Aquatop","offers":[{"title":"Default Title","offer_id":48412785148133,"sku":"810074881067","price":19.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0773\/7648\/7653\/files\/810074881067-2.jpg?v=1775376966"},{"product_id":"aquatop-nano-aquarium-heater-15-watt-4-gallon","title":"Aquatop Nano Aquarium Heater 1ea\/15 W, 4 gal","description":"\u003cp\u003eAquatop's 25-Watt Nano Aquarium Heater is perfect for Nano aquariums up to 4 gallons. It has a built-in precise electronic thermostat which is pre-set to 77 degrees Fahrenheit and it automatically shuts down when the target temperature is reached. Our 25-Watt Nano Aquarium Heater has a quick installation and is easy to use!\u003c\/p\u003e\n\u003cp\u003e25 watt\u003cbr\u003e Easy intstalation\u003cbr\u003e Good for u[p to 4 gallon tanks \u003c\/p\u003e\n\u003cp\u003eSold in Qty of: 1\u003c\/p\u003e","brand":"Aquatop","offers":[{"title":"Default Title","offer_id":48412788424933,"sku":"810281010748","price":21.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0773\/7648\/7653\/files\/810281010748.jpg?v=1775376966"},{"product_id":"aquatop-nano-aquarium-heater-25watt-8gal","title":"Aquatop Nano Aquarium Heater 1ea\/25 W, 8 gal","description":"Aquatops 25-Watt Nano Aquarium Heater is perfect for Nano aquariums up to 8 gallons. It has a built-in precise electronic thermostat which is pre-set to 77 degrees Fahrenheit and it automatically shuts down when the target temperature is reached. Our 25-Watt Nano Aquarium Heater has a quick installation and is easy to use!  ","brand":"Aquatop","offers":[{"title":"Default Title","offer_id":48412788457701,"sku":"810281010724","price":32.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0773\/7648\/7653\/files\/810281010724.jpg?v=1775376965"},{"product_id":"aquatop-submersible-glass-aquarium-heater-100-watt","title":"Aquatop Submersible Glass Aquarium Heater 1ea\/100 W","description":"Maintain constant and stable temperatures for your aquatic creatures to thrive with AquaTopís GH-50W aquarium heater. This fully submersible glass heater offers simple and easy installation with the use of the included suction cups and can handle aquariums up to 13 gallons. With the highly visible temperature setting, the GH-50W is easy to set and adjust to the desired temperature with the use of the Temperature Adjustment Knob. This powerful aquarium heater also has double insulation and is made from high quality insulated glass.\u003cbr\u003e\u003cbr\u003eSold in Qty of: 1","brand":"Aquatop","offers":[{"title":"Default Title","offer_id":48412797436133,"sku":"810281019390","price":28.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0773\/7648\/7653\/files\/810281019390.jpg?v=1775376847"},{"product_id":"aquatop-submersible-glass-aquarium-heater-150-watt","title":"Aquatop Submersible Glass Aquarium Heater 1ea\/150 W","description":"Maintain constant and stable temperatures for your aquatic creatures to thrive with AquaTopís GH-50W aquarium heater. This fully submersible glass heater offers simple and easy installation with the use of the included suction cups and can handle aquariums up to 13 gallons. With the highly visible temperature setting, the GH-50W is easy to set and adjust to the desired temperature with the use of the Temperature Adjustment Knob. This powerful aquarium heater also has double insulation and is made from high quality insulated glass.\u003cbr\u003e\u003cbr\u003eSold in Qty of: 1","brand":"Aquatop","offers":[{"title":"Default Title","offer_id":48412797468901,"sku":"810281019406","price":30.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0773\/7648\/7653\/files\/810281019406-2.jpg?v=1775376846"},{"product_id":"aquatop-submersible-glass-aquarium-heater-200-watt","title":"Aquatop Submersible Glass Aquarium Heater 1ea\/200 W","description":"Maintain constant and stable temperatures for your aquatic creatures to thrive with AquaTopís GH-50W aquarium heater. This fully submersible glass heater offers simple and easy installation with the use of the included suction cups and can handle aquariums up to 13 gallons. 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With the highly visible temperature setting, the GH-50W is easy to set and adjust to the desired temperature with the use of the Temperature Adjustment Knob. This powerful aquarium heater also has double insulation and is made from high quality insulated glass.\u003cbr\u003e\u003cbr\u003eSold in Qty of: 1","brand":"Aquatop","offers":[{"title":"Default Title","offer_id":48412797567205,"sku":"810281019420","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0773\/7648\/7653\/files\/810281019420.jpg?v=1775376847"},{"product_id":"aquatop-submersible-glass-aquarium-heater-300-watt","title":"Aquatop Submersible Glass Aquarium Heater 1ea\/300 W","description":"\u003cp\u003eMaintain constant and stable temperatures for your aquatic creatures to thrive with AquaTopís GH-50W aquarium heater. This fully submersible glass heater offers simple and easy installation with the use of the included suction cups and can handle aquariums up to 13 gallons. With the highly visible temperature setting, the GH-50W is easy to set and adjust to the desired temperature with the use of the Temperature Adjustment Knob. This powerful aquarium heater also has double insulation and is made from high quality insulated glass.\u003c\/p\u003e\n\u003cp\u003eSold in Quantity of: 1\u003c\/p\u003e","brand":"Aquatop","offers":[{"title":"Default Title","offer_id":48412799631589,"sku":"810281019437","price":36.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0773\/7648\/7653\/files\/810281019437.jpg?v=1775376846"},{"product_id":"aquatop-submersible-glass-aquarium-heater-50-watt","title":"Aquatop Submersible Glass Aquarium Heater 1ea\/50 W","description":"Maintain constant and stable temperatures for your aquatic creatures to thrive with AquaTopís GH-50W aquarium heater. This fully submersible glass heater offers simple and easy installation with the use of the included suction cups and can handle aquariums up to 13 gallons. With the highly visible temperature setting, the GH-50W is easy to set and adjust to the desired temperature with the use of the Temperature Adjustment Knob. This powerful aquarium heater also has double insulation and is made from high quality insulated glass.\u003cbr\u003e\u003cbr\u003eSold in Qty of: 1","brand":"Aquatop","offers":[{"title":"Default Title","offer_id":48412799664357,"sku":"810281019376","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0773\/7648\/7653\/files\/810281019376.jpg?v=1775376846"},{"product_id":"aquatop-submersible-glass-aquarium-heater-75-watt","title":"Aquatop Submersible Glass Aquarium Heater 1ea\/75 W","description":"Maintain constant and stable temperatures for your aquatic creatures to thrive with AquaTopís GH-50W aquarium heater. This fully submersible glass heater offers simple and easy installation with the use of the included suction cups and can handle aquariums up to 13 gallons. 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The thermostat has an auto shut off safety feature, when the top of the heater tilts below the bottom of the heater, it will shut off. Additional features include adjustable heat settings and LED heating indicator that illuminates when actively heating.  The suction cups make horizontal or vertical installation quick and easy. Pro Heaters are fully submersible and made for use in freshwater and saltwater aquariums. Available in five sizes to accommodate various aquarium sizes.  Adjustable heat setting 68 to 88?F, Electronic Thermostat accurate to +\/- 1?|Shatterproof construction|Fully submersible; Auto Shut-Off when over-heats, resets when it cools down|LED knob glows red when actively heating|Limited time warranty|Ideal for aquariums up to 100 gallons br\/\u0026gt;Sold in Quantity of: 1\u003c\/p\u003e","brand":"Aqueon","offers":[{"title":"Default Title","offer_id":48412872278245,"sku":"015905000611","price":74.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0773\/7648\/7653\/files\/015905000611.jpg?v=1775376726"},{"product_id":"aqueon-adjustable-pro-aquarium-heater-100-watt","title":"Aqueon Adjustable PRO Aquarium Heater 1ea\/Up To 30 gal, 100 W","description":"","brand":"Aqueon","offers":[{"title":"Default Title","offer_id":48412872343781,"sku":"015905000581","price":64.36,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0773\/7648\/7653\/files\/015905000581.jpg?v=1775376726"},{"product_id":"biorb-aquarium-heater-pack","title":"BiOrb Aquarium Heater Pack 1ea","description":"\u003cp\u003eAn aquarium heater can be accommodated with the aid of the Reef One heater stand. 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This innovative side-mounted cooling system uses evaporative cooling and heat dissipation to safely lower water temperatures, protecting your fish and plants from heat stress.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Benefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLow voltage 12V operation for maximum safety near water\u003c\/li\u003e\n\u003cli\u003eSide-mounted design minimizes water splash on motor and prevents accidental immersion\u003c\/li\u003e\n\u003cli\u003eMulti-directional discharge nozzle for precise airflow control\u003c\/li\u003e\n\u003cli\u003eFully adjustable wide nozzle maximizes air\/water contact for efficient cooling\u003c\/li\u003e\n\u003cli\u003eDual cooling methods: evaporative cooling and radiant heat dissipation\u003c\/li\u003e\n\u003cli\u003eSafer than overhead fans - protected motor placement\u003c\/li\u003e\n\u003cli\u003eQuiet operation won't disturb fish or household\u003c\/li\u003e\n\u003cli\u003eEnergy-efficient alternative to chillers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003ePerfect For:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTropical aquariums in warm climates or rooms\u003c\/li\u003e\n\u003cli\u003eTanks with high-output lighting that generates heat\u003c\/li\u003e\n\u003cli\u003eReef tanks and planted aquariums requiring stable temperatures\u003c\/li\u003e\n\u003cli\u003eSummer temperature management\u003c\/li\u003e\n\u003cli\u003ePreventing heat stress in sensitive species\u003c\/li\u003e\n\u003cli\u003eAquariums without air conditioning\u003c\/li\u003e\n\u003cli\u003eCost-effective cooling without expensive chillers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eProduct Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e Zoo Med\u003cbr\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Aquarium Heaters \u0026amp; Thermometers\u003cbr\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12V low voltage\u003cbr\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003cbr\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Side-mounted design\u003cbr\u003e\n\u003cstrong\u003eNozzle:\u003c\/strong\u003e Multi-directional, fully adjustable\u003cbr\u003e\n\u003cstrong\u003eCooling Method:\u003c\/strong\u003e Evaporative cooling and heat dissipation\u003cbr\u003e\n\u003cstrong\u003eSuitable For:\u003c\/strong\u003e All freshwater and saltwater aquariums\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow It Works:\u003c\/strong\u003e The Aqua Cool uses two effective cooling methods. Direct the nozzle upward toward your aquarium lights to dissipate radiant heat from the fixtures, or aim it across the water surface to increase evaporative cooling. The adjustable nozzle lets you fine-tune airflow for maximum efficiency.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSetup \u0026amp; Usage:\u003c\/strong\u003e Mount the fan on the side of your aquarium rim. Adjust the nozzle direction based on your cooling needs. For best results, use in combination with proper aquarium ventilation. 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