Description
xCompact reliability for small tanks
The hygger Mini 50W Submersible Heater is purpose-built for 5-10 gallon setups, including betta aquariums. Its low-profile black housing hides neatly inside your tank, giving you reliable warmth without crowding the aquascape. At just under 4 inches long and about an inch tall, it fits in tight spaces and even works in shallow habitats like small turtle tanks. You get a clean, unobtrusive look with dependable performance that won’t dominate the scene.
With an external thermostatic controller and a clear digital display, you can set and monitor exact temperatures with ease. The temperature range runs from 59 to 93 degrees Fahrenheit, and an indicator light shows when the heater is actively warming or is on standby. This setup helps you observe water warmth at a glance, so you can tailor conditions to your tank inhabitants’ needs.
Smart heating that adapts to your tank
This heater performs intelligent, automated heating: it powers on when the water falls below your target temperature and turns off once the setpoint is reached. A memory function helps preserve your settings after power outages, reducing the need to reset temperatures after a disruption.
Safety and installation matter — the device is designed to shut down safely if water levels are too low or if overheating occurs, and it emits an alert when a fault is detected. For proper placement, mount the heater using two suction cups either vertically or horizontally on the tank wall, and be sure to unplug during water changes or when you’re cooling the tank for about 15 minutes.
What you’ll notice in everyday use
- Quiet, steady warmth that supports calm, active fish in small tanks
- Simple, external control and a readable digital display for precise adjustments
- Compact design that blends into the aquarium while delivering reliable heating
- Integrated safety features: low-water shutdown, overheat protection, and a fault alarm
- Secure mounting with two suction cups and flexible orientation options
- Memory function helps you retain temperature settings after power interruptions
FAQ
Q: Is this heater suitable for 5-10 gallon tanks?
A: Yes. It's designed for 5-10 gallon aquariums with 50W heating and an external control for adjustable temps.
Q: What safety features does the hygger Mini Heater include?
A: It includes low-water shutdown, overheat protection, and a fault alarm to alert you of issues.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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