NICREW 100W Aquarium Heater with Temperature Adjustable Controller & Dual Sensors, 10-20 Gallon Submersible Fish Tank Heater, Overheat Protection
Original price was: $25.99.$19.99Current price is: $19.99.
Price: $25.99 - $19.99
(as of Oct 15, 2025 15:05:30 UTC – Details)
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: #20,770 in Pet Supplies (See Top 100 in Pet Supplies) #43 in Aquarium Heaters
Customer Reviews: 4.4 4.4 out of 5 stars 692 ratings 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
Customers say
Customers find the aquarium heater easy to set up and use, with good quality and value for money. The functionality is positive, with one customer noting it runs nonstop for months, and they like its appearance. The temperature control receives mixed feedback – while some say it keeps the temperature right, others report it being 8 degrees off. The lifespan is also mixed, with some customers reporting it breaks within two weeks of use.
13 reviews for NICREW 100W Aquarium Heater with Temperature Adjustable Controller & Dual Sensors, 10-20 Gallon Submersible Fish Tank Heater, Overheat Protection
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Original price was: $25.99.$19.99Current price is: $19.99.
Pepper0ni –
Great heater
This heater is splendid. It fits perfectly in almost any tank, itâs only about a foot long. The suction cups havenât moved since I placed it, so theyâre very sticky. The heater functions perfectly constantly. It has run nonstop for a few months with no issue at all, so their longevity is good so far. Overall, great value for the price. I love Nicrew!
Rachel Smith –
Tank water heater.
Works great!! No issues and good price.
Lexx –
Suction cups suck, not literally
I like the digital / visual aspect and that the heater is adjustable. the temp is off, itâs 1.5 ish degrees cooler than what is displayed. i set it at 80 to maintain a high 78/79°. i have checked its accuracy with two other thermometer- both of which display the same reading so i can only assume itâs the heater not registering temp correctly.upon setup of my aquarium, i had to re stick them to the glass at least 25 times each. not exaggeration. however, eventually they just stayed, and i havenât had to re- stick them since.one last thing that bothers me, the display is upside down. if you are the average person and hide your cords, and have the plug near the floor/ outlet, when using the digital display adjustment, itâs upside down. if you were to place the cord like the outlets are on the ceiling, it would face the right way. but most peopleâs outlets are below their tanks, meaning the cord is facing down. in this instance the numbers on the display are upside down.i like that they are fully black, and blend in mostly with my blacked out back glass. eventually the plants will hide them completely.
Rafael –
Pretty good heater
Great life, pretty accurate thermometer (varies around 2 degrees) and super sturdy on the glass
Lindsay C –
Affordable heater that works great in a 50 gallon aquarium
Works great to heat up the water quickly and keep the tank the right temp. We use it on occasion to warm up the water we are mixing in with salt within a 7 gallon bucket. It took about 25-30 min to warm it to 75 degrees from about 50 degrees water. Also used daily for a 50 gallon tank and have had no issues.
mark –
Room temperature water
I set it to 74. Check it the next day, water is 69. I set it to 78, I check it the next day, water is 69. Water is always room temperature. Defective product.
Mcruze –
So far so good
Only had the filter installed for a few days but it seems good. Suction works better than any of the other brands of filter I have used. In-line thermostat is a huge step up from the ones with a dial on top of the filter itself and the existence of the thermostat is a great feature for the price. Seems accurate and stable so far but I need more time to speak on its longevity and durability.
Carter –
Great value
I love my NICREW products and this is no exception. Great quality, value, and service. Plus, this is an attractive looking heater too! Would 100% recommend!
Gilles Dubé –
Fonctionne très bien , maintient la température de l’eau a + ou – 1 degré de la température indiquésur l’affichage digital . Parfait pour mon aquarium .
Giuseppe Paradiso –
Ottimo prodotto , materiali solidi e cura. Il termostato con display esterno risulta estremamente comodo e funzionale per una regolazione precisa della temperatura. Consiglio
Lucian –
Using this heater for a 180-liter tank.It heats up quickly after a partial water change that I do weekly.The temperature adjustment is easy with a simple display.The best thing about this heater is its compact submersible heating element and the high accuracy of its temperature calibration.I have the 300W one, so it can get quite hot. I am using a cover to protect the fish from burns.
Constance Richebourg –
Même modèle Utilisé sur nos 3 Aquariums. Nous avons longuement cherché le chauffage qui va bien (chauffe bien, stable, protection surchauffe, indication de la température choisie et réelle, longueur de câble suffisante,..) et nous l’avons trouvé. 23° stable et confirmé via thermometre. Parfait ð. En plus assez discret en noir et plutôt petit. Les ventouses tiennent bien.
Marco D. –
ho sia la versione da 100w comprata prima che quella da 200w nessun problema, tarati alla perfezione, sono già da qualche mese in acqua e a differenza di altre marche non presentano alcuna incrostazione. facili da impostare