Search  for anything...

Uniclife Aquarium Heater 25W/50W/100W/200W Adjustable Submersible Heating Rod with Electronic Thermostat LED Indicator Light and Thermometer Sticker for Freshwater Marine Fish Tanks

  • Based on 1,074 reviews
Condition: New
Checking for product changes

Buy Now, Pay Later


As low as $3 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Nov 18
Order within 22 hours and 31 minutes
Available payment plans shown during checkout

Size: 50 W


Features

  • For 5-20 Gal Tanks: Measure 8.5 inches in length. Applicable for aquaculture and fresh, marine and tropical aquariums. Save your fish or plants from coldness to keep them vigorous.
  • Adjustable: Controllable temperature range from 68 F to 93 F (20-34 C). Simply rotate the knob to freely regulate the temperature with deviations from 2 F to 4 F.
  • Detect Temp Timely: With a built-in thermostat, it will automatically keep the water at the set temperature. The extra thermometer sticker allows you to detect water temp at any time.
  • Heating Protection: Its indicator light turns red during working and automatically shuts off to stop heating when reaching the set temperature. No danger of overheating to your aquatics.
  • Reliable Material: The 2 mm extra thick shatterproof quartz glass can prevent electricity leakage. And the iron-chromium heating wires feature fast heating to warm your tank fitly.

Brand: Uniclife


Age Range (Description): Adult


Outer Material: Glass


Display Type: Digital


Product Care Instructions: Wipe Clean


Unit Count: 1 Count


Power Source: Corded Electric


Item Length: 8.5 Inches


Response Time: 500 Milliseconds


Reusability: Reusable


Product Dimensions ‏ : ‎ 8.5 x 1 x 1 inches; 8.11 Ounces


Date First Available ‏ : ‎ November 1, 2019


Manufacturer ‏ : ‎ Uniclife


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 18

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • GREAT Heater!
Size: 50 W
This is by far the best aquarium heater I have bought. You can adjust the temperature and, when the water becomes cold the heater will automatically turn hot. When the water becomes to warm the heater will automatically cook off. It is a MUST buy and highly recommend.
Reviewed in the United States on August 22, 2023 by Karina Karina

  • Only in the tank two days now.
Size: 50 W
Heater stopped working. Installed new heater, only in the tank two days so far but heater is working and has been at 80.4 since the tank came back up to temperature.
Reviewed in the United States on August 3, 2023 by L. Davis

  • Easy to set temperature
Size: 50 W
Seems to work well for 10 gallon tank
Reviewed in the United States on August 9, 2023 by rhonda gentry

  • Fish Thermometer
Size: 50 W
I struggle to make decisions on aquarium products when I look at reviews. It seems like aquarium products are overpriced and not built to last. I have had this heater for a while. It hasn't over heated or stopped heating like you find in many thermometer reviews. I am happy with it.
Reviewed in the United States on July 13, 2023 by stacijo

  • Good dispersed heat
Size: 200 W
I have a 20g long and it heats my whole tank
Reviewed in the United States on July 26, 2023 by Benjamin

  • Great Aquarium Heater
Size: 200 W
I bought this aquarium heater to keep my fish tank at a stable and comfortable temperature. I was looking for a reliable and easy-to-use heater that would work for my 40-gallon tank. This heater met my expectations and more. It is made of quartz glass that is shatterproof and explosion-proof. It has a thermostat that automatically adjusts the temperature according to your setting. It also comes with a thermometer that shows the actual water temperature. The heater is great for maintaining a healthy environment for your fish and plants. It is easy to install and operate, and it has a LED indicator that shows when it is heating or not. It can heat up to 50 gallons of water, and it has a temperature range of 68°F to 93°F. It also has a suction cup that holds it securely in place. ... show more
Reviewed in the United States on April 18, 2023 by pittbull57

  • Did good
Size: 50 W
The selectable temperature is a little Goofy. One time it was set for 72, but it was 88 in water. Morning with no sun shining on it. I dropped it on a concrete floor and the glass tube did not break.
Reviewed in the United States on May 10, 2023 by Bill F.

  • Great heater for my 10 gallon betta tank.
Size: 50 W
I bought this heater for my 10 gallon betta tank, and I ended up having to buy a different 10 gallon tank after using it for a few months, and it's worked well in both. The suction cups are strong, and the heater has never fallen, cracked, or broken. You can adjust it on the tank so it's easily readable, and its dial makes it easy to adjust the heat as well. My fish keeps rubbing up against it, probably because he likes the heat, and so far he's suffered no ill effects from getting so close to it. The heater's accuracy is off by about 3 degrees for me, but this is easily fixable if you have a glass thermometer, which are super cheap and easy to buy. The thermometer that comes with it is also pretty accurate, and you should be fine using that one to tell the temperature of the tank without buying a new one if you want to. Overall this is an excellent heater, and I trust it much more than other heaters that friends have bought for their aquariums. If you want a heater you can trust with your fish, I do recommend this. NOTE: I got the 50W heater for a 10 gallon betta tank, I can't attest to the 25W heater or other versions of this. Make sure you get the right sized heater for your tank! ... show more
Reviewed in the United States on January 2, 2023 by Em Fitzgerald

Can't find a product?

Find it on Amazon first, then paste the link below.