would this work in a one gallon tank?

I wouldnt because the temp on this can go up to 79 degrees in a 10 gallon tank, for that reason i purchased a 10 watt for my 1 gallon tank and it keeps the tank at a perfect temp of 78. Check out the Marina C10 Submersible on Amazon for $10.00.

Description says "the ht30 is adjustable between 72 degrees f and 85 degrees f". ok, why does the one i received say not adjustable, preset at 78?

All of the HT Heaters are preset now. Unfortunately, this is an old image and old description of the former HT 55. The description seems to have been translated to the HT 100 as well. Tetra is working to correct these issues immediately. We appreciate your bringing it to our attention. If you need any other assistance, please contact the Tetra Consumer Relations Team at 1-800-526-0650.

Will this be okay in a 3 gallon betta bowl i'm making? if not any recomendations?

Yea i think so. I seriously look at this every day and im sooooooooooo glad i bought it. My betta looked so depressed before in his bowl because my house gets down to 60 degrees and his water was getting cold and now he is so happy his water stays 78 and he swims like a happy fish and has a lot of bubbles on top (means there happy). Its so crazy that warmer* water can make a fish soooo happy. This is a must. Yes buy it for a 3 gallon tank- i think it will work just fine and your fish will LOVE IT i promise! Let me know how it works out for you- because im so glad i got it!

Does it turns off automatically

When it reaches the right temp. it automatically shuts off. When the light on it is green, it's heating; when the light is red, it's off

Tetra R Ht Submersible Aquarium Heater

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

KD 8.44

Duties & taxes included

In stock

Sold byAmazon KUWAITDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to KUWAIT.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Description

🔥 Keep your aquatic oasis perfectly cozy—effortless warmth, zero worries!

DISCREET COMPACT - Slim, submersible design hides seamlessly behind décor.
SAFETY FIRST DESIGN - Auto shut-off on electrical shorts keeps your aquatic friends safe.
VISUAL HEATING FEEDBACK - Red and green indicator lights keep you in the know at a glance.
UNIVERSAL FIT FOR SMALL TANKS - Optimized for 2-10 gallon aquariums with easy vertical or horizontal installation.
EFFORTLESS TEMPERATURE CONTROL - Maintains a perfect 78°F automatically—no fiddling required.

The Tetra HT 50-Watt Submersible Aquarium Heater features a built-in electronic thermostat that maintains a consistent 78°F, ideal for tropical fish in 2-10 gallon tanks. Its compact, fully submersible design allows flexible installation, while dual indicator lights provide real-time heating status. Safety is prioritized with an automatic shut-off during electrical shorts. Trusted by over 16,000 users, this UL-listed heater combines reliability, ease of use, and sleek concealment for a flawless aquatic environment.

Specifications

ASIN	B000OQO69Q
Best Sellers Rank	#8,014 in Pet Supplies ( See Top 100 in Pet Supplies ) #14 in Aquarium Heaters
Brand	Tetra
Brand Name	Tetra
Color	Black
Customer Reviews	4.4 out of 5 stars 16,724 Reviews
Global Trade Identification Number	00046798264477
Included Components	Aquaria 75026447: Tetra Submersible Aquarium Heater 50Wt
Item Type Name	Aquarium Heater
Item Weight	0.49 Pounds
Manufacturer	Tetra
Material	glass
Material Type	glass
Model Number	26447
Part Number	AQ-26447
UPC	046798264477
Unit Count	1 Count
Warranty Description	Two year warranty
Wattage	50 watts

Reviews

S**S

8.05.2025

A**A

30.12.2025

J**H

2.11.2025

A**V

10.04.2026

K**N

12.01.2012

E**S

28.12.2025

L**L

7.10.2020

K**E

17.10.2025

A**V

29.11.2025

E**N

25.02.2025

J**R

9.05.2022

M**Z

2.11.2025

T**I

4.10.2025

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

KD 8.44

Duties & taxes included

In stock

Sold byAmazon KUWAITDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to KUWAIT.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

View all Trustpilot reviews

Tetra(R) HT Submersible Aquarium Heater

Details

Details

Description

Specifications

Reviews

Common Questions