Orlushy

Orlushy Submersible Aquarium Heater 300W Adjustable Fish Tahk Heater with 2 Suction Cups Free Thermometer Suitable for Marine

201+ bought in the past month

$18.68$28.99

About this item

  • ★300W aquarium heater is suitable for 40 to 55 gallons aquariums,Length - 11 inch,voltage 110-120V, power cord is 6ft, please choose the right wattage aquarium heater according to our size chart.
  • ★It shows an area to adjust the temperature. It's not exactly accurate but it turns easy and can be adjusted at small intervals.
  • ★Explosion Proof: 2mm thickened quartz glass,can be used in fresh water and salt water aquariums,easy to hide in the tank.
  • ★Precise temperature dial from 68 to 89°F allows for complete control of aquatic climate within a 1-degree difference.
  • ★Adjustable Aquarium Fish Tank Water Heater Sensitive and reliable thermostat maintains uniform temperature. Automatic shut off when the temperature is reached
$18.68
Was $28.99Save $10.31

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Technical specifications

item_weight15.8 ounces
manufacturerOrlushy
date_first_availableSeptember 3, 2018
item_package_dimensions_l_x_w_x_h12.53 x 3.66 x 2.25 inches
item_dimensions_lxwxh11 x 1.2 x 1.2 inches
brand_nameOrlushy
target_audience_keywordfish
size300W
materialquartz glass
styleTropical
is_discontinued_by_manufacturerNo
product_dimensions11 x 1.2 x 1.2 inches; 15.84 ounces
best_sellers_rank#910 in Pet Supplies ( See Top 100 in Pet Supplies ) #1 in Aquarium Heaters

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Customer reviews

4.48,092 ratings

Customers say

Customers find the aquarium heater works well, particularly in 55-gallon tanks, and appreciate its quality and value for money.

★★★★★

⚠️Warning this Will not blow up⚠️ great heater highly recommend read review.

Delilah B.August 4, 2025✓ Verified purchase

It’s been seven months since I’ve bought this heater it’s had been keeping the temperature pretty good and it even tho it does hover at 72-73.5 degrees Fahrenheit I have this way because my dojo pond loach’s have to have water below 80 degrees Fahrenheit or they will experience fungal infections and ich infections there a cold water fish used to cooler temperatures somewhat similar to gold fish which are actually a cold water fish and I have a albino mini pleco algae eater some people would call it measuring in at 5 inches last time I checked and the pleco’s like temperatures in the early 70’s and early 80’s 72-82 degrees Fahrenheit is a lil bit warmer but not too much so 72 is the appropriate temperature and the Cory’s like warmer temperatures as well hovering in at early 70’s to the early 80’s 72-82 degrees Fahrenheit so to keep everyone happy or at least satisfied I keep it at 72 degrees Fahrenheit and even this it does go up a few degrees that’s fine as long as it doesn’t go below past 79 degrees Fahrenheit that fine but let’s get into the heart of the subject:how long will this cheap heater last?🤔 well for the last seven months it’s held up pretty well so I’ll eyeball it five eight years approximately not sure like I said “eyeballing” it.subject2safety well it’s hasn’t made my tank become a boiling pot of loach food so that’s a plus and it hasn’t burnt up,melted, exploded,glass or heater either or shattered,hasn’t,stopped working,cord or heater electrocuted the fish and hasn’t busted the tank which is 35 gallon bowfront aquarium to pieces like a ticking time bomb and thickness of this cheap heater well it seems to be the last time I put it in and also had felt it which I touched it because I was trying to see if it was working yes it is still working and I have three thermometers on the tank one inside of the tank and reads the temperature outside the tank it’s the one that it comes with and this is not gonna blow up in my hands or fish tank question NO it’s not gonna be so cheap that’s it’s gonna be like a cracker this if you ask me is 4th or 5th in the top five list of best heaters on the aquariumist market 1st being eheim 2nd fluval 3rd being probably United because I searched it up and so….any way fourth being I guess yes orlushy brand and fifth I guess because my mother’s tetra fish heater didn’t stop working or melt I’ll put Tetra in at 5th place because well that’s what I’ve SOMEWHAT have experience on anyway great heater highly recommended and will be buying another one of this or another variant if this brand this brand has really surprised me yet….but for now yes great heater Godbless! Read more

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★★★★★

Reliable Heater That Keeps Perfect Temperature — Even in a Cold Garage

matthewJanuary 5, 2026✓ Verified purchase

I bought this aquatic heater for my red-eared slider turtle, and it has been working great. It keeps the water at a perfect, consistent temperature, which is extremely important for turtle health—especially since my turtle is currently housed in a cold garage. Despite the colder environment, the heater maintains the set temperature without any fluctuations. It feels well-built and durable, which is important in a turtle tank where equipment can get bumped around. Installation was easy, and once set, it requires very little maintenance. Overall, this heater has been reliable, efficient, and gives me peace of mind knowing my turtle stays warm even in a colder space. I’d definitely recommend it to anyone keeping a red-eared slider or other aquatic turtle. Read more

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★★★★★

Great heater

Wesley HiblerMarch 7, 2026✓ Verified purchase

Heater works great! Thermometer is off a little but I only bought for the heater. Read more

★★★★☆

Working

ChristineDecember 5, 2025✓ Verified purchase

It took a little to get the temperature correct but is working fine now. We had to follow the trouble shooting guidelines. Read more

★★★★★

Heater works well

PhoenixFebruary 26, 2026✓ Verified purchase

Heater appears to be well made, and keeps my aquarium within 1 degree of the targeted temperature. Arrived in good condition, no breakage, and within a lot of protective foam. Have used it for about 1 1/2 months. Read more

★★★★★

Easy to set up

PlantDaddyMarch 9, 2026✓ Verified purchase

Works perfectly for my 20 gallon adjustment handle is easy to use to change the temperature. Read more

★☆☆☆☆

Budget heaters that come with flaws - Ignore the 4.5 stars and use caution

Thomas WolfJanuary 19, 2020✓ Verified purchase

Alright, so first things first. These heaters work, they just do not work as advertised. They do not provide a 21 F temp range. Maybe 15 in ideal conditions, and much less than that in semi-cold environments (60 F). I have three 300W's, 1 150W, and 1 100W. A 300W is perfectly suitable for a 40-gallon breeder. A 100W is suitable for a 10G. A 150W is suitable for a 20G. But, when you crank these devices to maximum power, an indoor pond of fewer than 180 gallons including an insulated bottom will not go over 75F from 60F. That's a measily 15 degrees with some serious power usage: 1,150 watts. This is not ideal for my Tilapia which require 80-86 for optimal growth and breeding. The black things on the bottom always come off. I don't even know why they bother. I believe the included (and very ghetto) temperature gauge is purely an incentive to make a cheap and inefficient product seem a good alternative to more expensive heaters. If you are running basic tanks indoors, and do not care about looks, or having to constantly fiddle with the temperature gauge knowing that it's never going to be the temp it says, this may be a bargain for you. I don't mind using them in my 40G breeder, 20GL or 10G Fry tanks. However, these are cheap for a reason. I would take that into consideration before buying them depending on your particular needs. Also, raising the prices 3+ dollars is, well, how do I put it - sending me in a new direction. These were barely a bargain due to the flaws before. I will not pay those prices for an inferior product; I will drop extra money on a better heater. I suggest you are more honest in your advertising, if my fish didn't need the heaters to survive I'd already have returned them as products that do not work as advertised. I highly advise against these heaters for anything but cheap aquarium setups. The price of all the heaters I bought combined has me wishing I'd chosen to raise trout instead. It takes my aquaculture hobby which uses next to no power and demands at least another 300 watts on top of the 1,150w I already have. That's a lot of power, which creates a big power bill. I advise you to go with another brand and save yourself this headache if you can afford too. Read more

★★★★★

It doesnt keep the right temp very good

bnglewMarch 8, 2026✓ Verified purchase

Easily assembled! Its an average heater but barely keeps the temp i set it for so i had to set it 2 degrees higher just to barely get to the right temp. Read more

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