NICREW 100W Aquarium Heater with Temp Controller for 10-20 Gallon Tanks | Dual Temp Sensors, Accurate Heat Control, Overheat Protection, Durable Quartz Glass, Freshwater & Saltwater Compatible

Product description

Installation tips

It is recommended that the heater be fully immersed in water and placed in an area with good water circulation, such as near a filter intake or water pump, to minimize temperature error.

Aquarium Heater Size Guide

To calculate the required power for the aquarium heater, follow these steps:

Measure the actual dimensions of the fish tank, including the length (L), width (W), and the height of the water level (H).Use the following formula to calculate the required power: Required Power = (L × W × H / 231) × 5

Situations requiring a larger heater include no cover or near an external wall/door, room temp <65°F, and ≥15°F water temp increase.

Package Dimensions ‏ : ‎ 12.09 x 4.49 x 2.13 inches; 13.76 ounces
Date First Available ‏ : ‎ August 22, 2025
Manufacturer ‏ : ‎ NICREW
ASIN ‏ : ‎ B0FFYVJVHF
Best Sellers Rank: #50,500 in Pet Supplies (See Top 100 in Pet Supplies) #98 in Aquarium Heaters
Customer Reviews: 4.5 4.5 out of 5 stars (536) 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); } }); });
Temperature Adjustable: External controller features power-off memory function, allowing easy adjustments without wetting hands
Precise Temperature: Dual temperature sensor technology for accurate temperature readings
Overheat Protection: The heater automatically turns off when water temperature exceeds 98℉(36°C) to prevent overheating, ensuring safety
Efficient Heating: Nickel-chromium alloy heating element for rapid heat-up. Magnesium oxide filling ensures efficient heat transfer into the water
Easy Installation: Includes suction cups for secure attachment to the aquarium wall. It is recommended that the heater be fully immersed in water and placed in an area with good water circulation to minimize temperature error