SOBO Siamese Fighter Betta USB Mini Aquarium Heater 10W

SOBO Siamese Fighter Betta USB Mini Aquarium Heater 10W

The SOBO Siamese Fighter Betta USB Mini Aquarium Heater 10W is a compact USB-powered heater that holds a stable temperature in small fish tanks under 5 litres (1.3 gal). It is made with Siamese Fighter (Betta splendens) keepers in mind and suits both freshwater and saltwater setups.

Key Benefits

• Designed for small tanks under 5 litres (1.3 gal), and the 10W rating is also listed for aquariums of 5-10 litres (1.3-2.6 gal).
• USB-powered with a rated voltage of DC 5V/2A, so it does not need a bulky mains-wired unit.
• The upgraded chip gives temperature accuracy of ±1°C and helps keep electricity use down.
• It remembers your setting. If the power is suddenly cut and then restored, the target temperature stays as you set it.
• The built-in thermometer and overheating protection stop the heater working if the water gets too warm.
• The external temperature controller lets you adjust the heat without getting your hands wet, and you do not need to buy a separate controller.
• The 1 m (3.3 ft) power cord makes installation and control easy.

How to Use

• Power the heater from a USB supply rated 5V/2A.
• Set your target temperature on the external controller. The adjustable range is 15-34°C.
• Once set, the heater holds that target, and the setting is kept if power is switched off and on again.

Important: an adapter that is not 5V 2A may stop the heater from heating, make the numbers flash, or cause it to restart repeatedly.

Overheating Protection

• The built-in thermometer covers a temperature range of 15-34°C.
• If the water temperature goes above 34°C, the error code "HI" appears and the heater stops working.
• When the water drops back below 34°C, the error code disappears and the heater starts working again.

Suitable For

Suitable for freshwater and saltwater, and for small tanks such as Betta bowls and nano setups. The listed species and groups that suit its temperature range are:

• Turtles
• Fighting Fish and Peaceful Betta
• Betta Smaragdina
• Guppy
• Goldfish
• Neon Tetra
• Gourami and Dwarf Gourami
• Pterophyllum and Pterophyllum Scalare
• Koi
• Corydoras
• Anabantoidei
• Paradise Fish
• Clownfish
• Swordtails

Specifications

• Power: 10W
• Rated voltage: DC 5V/2A (USB)
• Temperature range: 15-34°C
• Accuracy: ±1°C
• Heater size: 3 cm (1.2") diameter x 5 cm (2") length
• Power cord length: 1 m (3.3 ft)
• Tank size: under 5 litres (1.3 gal), also listed for 5-10 litres (1.3-2.6 gal)
• Water type: freshwater and saltwater

What's Included

• One 10W USB mini aquarium heater, 3 cm (1.2") diameter x 5 cm (2") length, with external temperature controller and 1 m (3.3 ft) power cord

Frequently Asked Questions

What size tank is this heater meant for?
It is designed for small tanks under 5 litres (1.3 gal), and the 10W rating is also listed for aquariums of 5-10 litres (1.3-2.6 gal).

Can I use any USB charger to power it?
No. It needs a 5V 2A supply. A different adapter may stop it heating, make the numbers flash, or make it restart repeatedly.

Will it keep my temperature setting after a power cut?
Yes. If the power is turned off suddenly and then back on, the target temperature you set remains unchanged.

What does the "HI" error code mean?
The water temperature has gone above 34°C. The heater stops working, and it starts again automatically once the water falls back below 34°C.

What temperatures can I set?
You can adjust the target between 15°C and 34°C, with accuracy of ±1°C.

Is it suitable for saltwater?
Yes. It is suitable for both freshwater and saltwater, and the species list includes Clownfish.

When can I expect delivery?

• Gauteng (Jhb/Pta) - 1-3 working days
• Nationwide (Cpt/Dbn+) - 2-5 working days
• Outlying Areas - 3-7 working days

All orders are sent via Economy Road, typically through Fastway or Internet Express Couriers*. Estimated timeframes are not guaranteed. Once the order is collected by the courier, we have no control over third-party logistics and cannot make any time promises.

If you prefer a faster 🚀 shipping option, we also offer The Courier Guy during checkout in the dropdown selection. Please note that this option is not free, and you must choose it to use it. Please pay careful attention to the cutoff times and delivery timeframe for these options during checkout.

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Delivery times to lockers and pickup locations typically range from 2–7 working days, depending on your location.*

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Collection timeframes:

• Bob Box: Collect within 2 days of receiving your collection notification.
• PUDO Lockers: Collect within 36 hours of receiving your collection PIN or SMS notification.

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Please ensure you collect your parcel within the applicable collection period. Uncollected parcels will be returned to the sender, and additional shipping charges may apply should the order need to be resent.