Search  for anything...
HITOP

HITOP 50W 100W 300W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Suction Cup (300W)

  • Based on 8,129 reviews
Condition: New
Checking for the best price...
$17.97 Why this price?
Holiday Deal was $17.98

Buy Now, Pay Later

As low as $4 / 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, Affirm, Afterpay, Apple Pay, and PayTomorrow. 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

FREE 30-day refund/replacement

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: Only 10 left in stock, order soon!
Fulfilled by Amazon
Arrives Thursday, Nov 6
Order within 14 hours and 33 minutes
Available payment plans shown during checkout

Pattern Name: 300W


Features

  • [Aquarium heater]: HITOP 300W aquarium heater, length 10.4-inch, power cord 4.9ft, designed for small fish tanks, recommended for aquariums 45-60 Gallons.
  • [Adjustable and easy to use]: This aquarium heater, adjustable temperature range 68 ~ 93 F, after setting the temp you want, will on or shut off automatically when the water temperature changes, no extra adjustment is required.
  • [Accurate Temperature Control]: This fish tank heater built-in thermostat, will automatically keep the water at the set temperature within2F error. Comes with an sticker thermometer to detect water temp at any time.
  • [Thickened glass]: 2mm thickened quartz glass, 33% thicker than normal aquarium heaters, much safer for both human and animals.
  • [Accessories]: A stick-on thermometer, and three suction cups meet your needs. We provide 12 months after-sales service.

Package Dimensions ‏ : ‎ 13.3 x 3.19 x 1.85 inches; 10.23 ounces


Date First Available ‏ : ‎ January 3, 2020


Manufacturer ‏ : ‎ Haisen


Best Sellers Rank: #1,590 in Pet Supplies (See Top 100 in Pet Supplies) #3 in Aquarium Heaters


#3 in Aquarium Heaters:


Customer Reviews: 4.4 4.4 out of 5 stars 8,129 ratings


Item Weight: 10.2 ounces


Manufacturer: Haisen


Date First Available: January 3, 2020


Item Package Dimensions L x W x H: 13.3 x 3.19 x 1.85 inches


Brand Name: HITOP


Target Audience Keyword: fish


Size: 300W


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Nov 6

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.

Similar Products

Top Amazon Reviews

    • Works well and keeps water steady
Pattern Name: 100W
Review Image by Hazel Lancaster Hazel Lancaster
Easy to set up and the suction cups hold firmly. It heats the tank quickly and keeps the temperature stable. Great value for the price and perfect for my tank.
Reviewed in the United States on September 25, 2025 by Hazel Lancaster Hazel Lancaster
    • Works great
Pattern Name: 200W
This product actually heats evenly and correctly. Spend the money and get good quality. I’ve bought cheaper ones before and they haven’t worked as well. I like the dial to set the temperature versus a digital one because I find that always fails.
Reviewed in the United States on October 13, 2025 by Julie Kingsley
    • Great for price and quality!!! Love it
Pattern Name: 25W
Review Image by Ana Isabel Ana Isabel
The heater works absolutely great!! I was scared of buying it online, but it was a great decision, you can adjust whatever temperature you want and the instructions come clear. It took about 4 hours to heat up completely and start the cycle, you can see the red light dot when it's doing it's thing and it has kept the temperature perfect for my future betta! I'm glad I chose this one ... show more
Reviewed in the United States on July 30, 2025 by Ana Isabel Ana Isabel
    • Nice item.
Pattern Name: 100W
Review Image by Audrey Audrey
Great product. Heated very fast however the reason I am not giving this 5 stars is because the knob to change the temperature was a bit difficult to turn.
Reviewed in the United States on March 29, 2025 by Audrey Audrey
    • Works well
Pattern Name: 200W
Using in my 29 gallon tank. Works well keeps tank temp the same temp.
Reviewed in the United States on October 19, 2025 by Lydia
    • Read the instructions, and the water will take time to heat up
Pattern Name: 50W
Simple to set up, and it only takes 4 hours for the water to heat up.
Reviewed in the United States on September 22, 2025 by Keelyn
    • Get it, it works great.
Pattern Name: 100W
Works perfectly, unlike others I have purchased in the past, very accurate and also come with glass stick thermometer and more importantly the price, how I came to making this is the amount sold, the more sold you can’t go wrong.
Reviewed in the United States on October 7, 2025 by john
    • May be great if you get the right one
Pattern Name: 50W
I got the 5-15gal one and it does NOT work on a 10gal tank. I'm having to turn it all the way up just to get it to change a couple degrees. So if you have a 10 gallon, get the 100w not the 50w. That was my bad 🤦🏻♀️ idk what I was thinking
Reviewed in the United States on September 30, 2025 by Mady

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...