Fish Tank Aquarium Heater – Adjustable Temperature Submersible Thermostat Heater,25W/50W/100W/150W/200W/300W
$9.99
Price: $9.99
(as of Oct 11, 2025 18:03:37 UTC – Details)
About Bnzaq Aquarium Heater
The aquarium heater is made of shatterproof glass that not easy to broken.The temperature is adjustable(68°F~90°F) that suit more species of fish and let your fish enjoy more comfortable environment.
Specification:
*Heater Length
25W：7.7″
50W：7.7″
75W：7.7″
100W：8.7″
200W：10.6″
300W：12″
*Heater Capacity
25W: >8 gallons tank
50W: >13 gallons tank
75W: >24 gallons tank
100W: >40 gallons tank
200W: >53 gallons tank
300W: >79 gallons tank
Package Dimensions : 11.93 x 3.5 x 2.05 inches; 8.11 ounces
Item model number : YGJRB-200W
Date First Available : October 19, 2019
Manufacturer : Bnzaq
ASIN : B07VWLK6J6
Best Sellers Rank: #36,150 in Pet Supplies (See Top 100 in Pet Supplies) #89 in Aquarium Heaters
Customer Reviews: 4.2 4.2 out of 5 stars 2,907 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); } }); });
[ADJUSTABLE TEMPERATURE]Temperature range: 68°F~90°F.200W heater is suitable for fish tank under 53 gallons,Length:10.6″.Easy to adjust temperature by the aquarium heater that suit more species of fish.
[AUTOMATIC CONSTANT TEMPERATURE]When water temperature reaches set value,the indicator light will be OFF and the heater will automatically stop heating.The heater will automatically start heating and indicator light will be ON if water temperature is low.You could place heater horizontally or vertically.
[NO LONGER CHILL YOUR FISH]Automatically regulate and maintain water temperature,imitate the original ecological environment for your tropical fish.Provided fish with warm water environment.Perfect to apply to fresh and salt water.
[PREMIUM SHATTERPROOF GLASS]Made of shatterproof glass and BPA-free plastic.Bnzaq aquarium heaters are fully submersible and safe for fish without any toxic substance producing.
[ATTENTION]Please place the heater near place (filter or pump) of water flowing to keep more even water temperature.Unplug the heater 30 minutes early when changing the water for the fish tank.
Customers say
Customers find the aquarium heater works well with multiple tanks and is particularly suitable for small tanks, with one customer noting its effectiveness in a 2-gallon tank. The heater receives positive feedback for its quality and value for money. However, the temperature control and accuracy receive mixed reviews – while customers can adjust it easily, the temperature knob is hard to spin, and accuracy is not good. Moreover, the heater’s durability is concerning, with multiple reports of it shattering within a day of use.
13 reviews for Fish Tank Aquarium Heater – Adjustable Temperature Submersible Thermostat Heater,25W/50W/100W/150W/200W/300W
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$9.99
Raja –
Worked for Texas type freeze
Worked well during the Texas freeze. I had three of this 300w units running in a 500 gallon outdoor tiled gunite pond and they kept the water above 45 or so. I had another floating heater, that helped bring the water up to 57 or so but the floating heater is useless IMO, it does not turn on unless the water gets to 35 or so. These ones work non-stop, it will never reach the 80F setting I have.I dont think this will be suitable for colder places. Suction cups are useless.
Courtney Freeland –
So cool!
I love the twist top and moveable red piece in there. It’s nice and sleek, not bulky like other heaters. I have a 10 gallon tank and within minutes of putting it in, the light came on and warmed up the tank. I love the adjustable suction cups too. And for that price, blows the other heater out of the water. I will update if any issues arise.
Kathleen Vail –
Ordered again after receiving the first one
This doesnât take up a ton of space being thinner and longer , works quickly, and was an affordable price⦠I came back the next day and ordered a second one
Stewart S. –
Turn Off Heater During Water Changes
This heater broke into two pieces after only one month. At first I was upset about the product quality, but did a little research and discovered glass heaters often break if they’re powered on and the water level drops beneath a certain point (like during water changes). So that’s my fault, though it would’ve been nice if that direction was included with the heater. Otherwise, it had worked well while I had it and I am glad it broke into two easily retrievable pieces, rather than fully shattering.
Y. Almonte –
Highly Inaccurate
Been using for about to weeks to quarantine fish and noticed that over past few days the calibration of off. Today I went to feed the fish noticed the fish acting strange and floating side ways when I touched the water it was ice cold. After putting a thermometer in the water I doubt the water was at about 70 degrees when I had it set to 78. In order to get the temp up to about 78 I had to see the heater to the max.however whatâs to say itâs not going to all of a sudden crank itâs self up to that temp. These things a very unreliable. I guess you get what you pay for i figures since I was only using it for QT it would be enough but I guess I was wrong. I would recommend to stay away from these as you might loose some fish along the way.
Amazon Customer –
So far so good ð
Product came in the mail quick and works as it should. I don’t use it in an aquarium. It’s used to heat up saltwater for water changes. Probably about 5hrs a week. Works quick for 40 gallons of water
stan tarkowski –
great
Great
ReyLynn –
Works good
The temp knob is way off. I have my tank at 80* and the knob is set at much higher then it. I’ve been doing a no fish test run the past week after our beloved Betta passed from temps not staying at 78-80 which is why I bought this heater. It is small and works great in our 3.5 gal tank. It keeps it right at 80 and kicks on and off. I keep it on a corner of my bow front tank so not see looking right at it. The little fake plants it comes with are cute and feel pretty soft plastic so I’ve kept them in case I change everything out or add more to a tank later since I’m planing on a bigger tank later on.
Wejdan –
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Mohamed Musthafa Rayams –
It was working well for the first 12 hours and after that all of the sudden it was blow up and broken and stop working. Submitted for return and refunded in gift card account.
Andy Dee –
Works very well. Satisfied and recommend.
Shahid –
At first this heater was amazing and did everything I wanted it to do but today when I when to check on my fish. I realized their morning light bar did not turn on so I checked my power brick if it was on but the switch was turned on but I could not see any light. So, I checked their tank and the heater broke into pieces so I had to quickly turn off my breaker to minimize any risk when taking the fish out. Anyway, I would not recommend this product as this is a safety hazard to humans and fish. As I had an expensive discus pair in the tank which they got a bruised but now in a recovery tank. Would like a refund or some sort of compensation. Have a good day everyone, hope other people do not have the same experience as I had.
Jerden Cayog –
I like the size of it but sadly I received a broken glass, Im asking for a replacement but happily the customer service make a refurn for me