Aquarium Heater 300W Submersible Water Thermostat Fish Tank Heater Adjustable Temperature with Digital Thermometer for 40-75 Gallon Tanks

Novique, is committed to providing professional, high quality products for every aquarium hobbyist.
Product Parameters：
Power : 300W
Voltage: 110V/60Hz
Heater Temperature Range: 65 – 89°F (18 – 32°C)
Heater Length: 11.5 inch
Power Cord: 6 ft
ApplicableTank: 40-75 gallon freshwater and saltwater fish tanks
Free Gift: 1* Digital thermometer(Include: 2* Pack suction cup, 1* LR44 batteries)
Thermometer Temperature Range: -58°F to +158°F (-50°C to +70°C)
Thermometer accuracy: ±1°C
How to Use:
1.Turn top knob to set temperature you want before completely submerging into the water.
2.Mount suction cup holder on upper end of heater body keeping clear of heating element.
3.Must fully submerge in water.
4.Please Plug in power supply.
5.Attach digital thermometer to outesr surface of tank using a suction cup.
6.Place probe into water , press “PWR” to turn on power and start measuring temperature.
Cautious:
1.Always keep it fully submerged under water before plugged in.
2.Monitor water level constantly – Replenish immediately if low.
3.Unplug it and wait for at least 10 mins before you do aquarium maintenanceor take it out of water.
4.Do not touch the heater while it is powered on to avoidscalding.
5.Do not install suctioncups in the heating area.
6.Submerge only the probe,not the entire thermometer.
7.Recommended to use pump or filter to facilitate circulation of water during heating process, thus preventing localized overheating.
Features:
– Adjustment Temperature
– Safety Guarding
– Widely Application
– Full Set of Accessories
– Excellent Service
What made me decide on the Novique 300W Aquarium Heater?
1.Adjustment Temperature:
Heater equipped with a precision knob on top, allowing free adjustment within a range of 65-89°F (18-32°C). when heater is operating, red light comes on. Once temperature is reached, red light goes off.
2.Safety Guarding:
The housing of Novique heater feature a extra-hard glass and excellent heat resistance. Internal heating wire feature nickel-chromium alloy and arranged in a spiral pattern, enabling rapid heating.
3.Widely Application:
Heater is widely used and can easily be adapted to various scenarios such as freshwater tanks, saltwater tanks, and turtle tanks.
4.Full Set of Accessories:
Include: 1* 300W heater, 2* powerful suction cups, 1* 6ft power cord and 1* free digital thermometer.
5.Excellent Service:
We provide 24-hour professional after-sales service. always ready to respond to your needs.
Novique, always innovating for a better life.
Experience excellence with Novique.
Package Dimensions ‏ : ‎ 13.78 x 3.19 x 1.89 inches; 9.91 ounces
Batteries ‏ : ‎ 1 LR44 batteries required. (included)
Date First Available ‏ : ‎ March 5, 2026
Manufacturer ‏ : ‎ Novique
ASIN ‏ : ‎ B0GR9N4XMC
Best Sellers Rank: #37,761 in Pet Supplies (See Top 100 in Pet Supplies) #63 in Aquarium Heaters
Customer Reviews: 4.8 4.8 out of 5 stars (23) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
【Novique 300W Aquarium Heater】: When water temperature drops sharply, fish become sluggish and stay at bottom, losing appetite. Only at an appropriate temperature can they swim freely and display their vitality. Novique heater has a adjustment temperatur function, allowing you to easily set appropriate water temperature. It can ensure safety, suitable for a wide range of scenarios and come with complete accessories. Let Novique protect a warm and vibrant environment for your beloved fish.
【Adjustment Temperature】: Novique knob-style fish tank heater differs from traditional heating rods that are fixed at 78°F. Equipped with a precise rotary knob on top, allowing for free adjustment within range of 65-89°F (18-32°C). Equipped with a built-in smart temperature control system, when heater is operating, red light comes on. Once temperature is reached, red light goes off. Automatically turns on and off heating according to set temperature, maintaining a constant water temperature.
【Safety Guarding】: The housing of Novique heater feature a extra-hard glass and excellent heat resistance. Internal heating wire feature nickel-chromium alloy and arranged in a spiral pattern, enabling rapid heating. After heater has been heating for a period of time, it will pause for a few minutes(during which indicator light will go out), gradually reaching preset temperature. This helps maintain water temperature relatively stable, making it very safe for both humans and aquatic animals.
【Widely Application】: Novique aquarium submersible heater can easily be adapted to various scenarios such as freshwater tanks, saltwater tanks, and turtle tanks. Whether you are keeping tropical fish, water turtles, or ornamental shrimps, it can provide stable and precise temperature control. One device for multiple purposes. Let professional-grade temperature control technology accompany you in realizing every dream of aquarium keeping.
【Full Set of Accessories & Excellent Service】: Novique heater kit is ready to use right out of box and includes everything you need. Include: 1* 300W heater, 2* powerful suction cups, 1* 6ft power cord and 1* free digital thermometer. Ready to use upon opening box and does not require any additional purchases. Novique brand is equipped with a 24-hour professional customer service team, ready to help you solve any problems during usage process, ensuring your shopping experience is worry-free!