hygger BUK-HG159 500W Submersible Aquarium Heater

The hygger BUK-HG159 is a 500W submersible aquarium heater with a digital LED controller and automatic protection claims. Its stated tank range is 220-510L, making that capacity range central to choosing it.

At a glance

External controller displays set temperature, current water temperature and real-time power.
The listing describes an adjustable heater range from 15°C to 34°C and automatic stop with a warning at 36.5°C.
The controller is described as warning and stopping heating if the water reaches the stated high-temperature threshold.

Price

£33.51Save 20%

Reference price: ~~£41.89~~

Price checked: 14 Nov 2026

View offer

Pros and cons

Pros

The external readout and fine adjustment allow temperature settings without relying on an unmarked dial.
The 500W rating and stated 220-510L tank range suit buyers comparing heaters for larger aquariums.
A listed warning and automatic stop provide a response to the stated high-water-temperature condition.

Technical specifications

21 specifications

Power and compatibility
Rated power	500W
Suggested tank capacity	220-510L
Supply	AC 220-240V/50HZ
Use	Aquarium
Freshwater and saltwater	perfect for both freshwater and saltwater aquariums.

Temperature control and protection
Heater temperature range	59°F(15°C) to a maximum of 93°F(34°C)
Heating start threshold below set point	1°F/0.5°C
High-temperature warning threshold	97.7°F(36.5°C)
LED display	The LED display shows the set temperature,current temperature, and real-time power
Temperature adjustment	Turn the knob left/right to decrease/increase the temperature by 0.1°F/0.1°C
Automatic protection response	When the heater malfunctions and the temperature rises,the system will trigger the lPS after 10 seconds.

Construction and dimensions
Heating element material	explosion-proof quartz
Heating wire	highly temperature-resistant nickel-chromium heating wire
Heat conductor	silicon carbide
Heater rod length	500W heater is 26.6cm long
Weight listed	1.08 kg
Package dimensions	40.4 x 20.9 x 6.7 cm; 1.08 kg
Colour	Black

Product details
Model number	BUK-HG159
Quantity	1
Batteries required	No

What to know before buying

Listing details to confirm

The listing details are inconsistent about temperature adjustment: it says a short press increases temperature by 1'F/1'C, while turning the knob adjusts by 0.1°F/0.1°C. It also describes an automatic protection trigger after 10 seconds and separately says heating stops at 36.5°C, without clarifying how these responses relate. Confirm the control steps and protection behaviour before relying on them.

Who is it for?

A good fit for

Aquarium owners whose tank falls within the stated 220-510L range and who want an external digital temperature display.
Freshwater or saltwater aquarium keepers seeking a 500W submersible heater with adjustable temperature settings.

Less suited to

Buyers needing a heater for tanks outside the stated capacity range or a different input supply.
Buyers who require independently confirmed protection performance or fully consistent control instructions.

hygger BUK-HG159 500W Submersible Aquarium Heater · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 18 ratings

5 stars70%70%
4 stars19%19%
3 stars11%11%
2 stars0%0%
1 star0%0%

The aggregate ratings lean positive, with most ratings in the five-star category, while a smaller share are three-star. That is a limited signal from a small rating sample, not an explanation of performance or a substitute for checking the stated tank range and the unclear temperature-control instructions.

Frequently asked questions

What tank size is this heater listed for?

The manufacturer states that the 500W version is for aquariums from 220-510L.

What temperature range can be set?

The listing gives a heater range of 15°C to 34°C. It also reports a 36.5°C warning and automatic stop, but its description of the adjustment steps is inconsistent.

Does it have a digital temperature display?

Yes. The listing says the LED display shows the set temperature, current temperature and real-time power.

Is it described for saltwater tanks?

Yes. The listing states suitability for both freshwater and saltwater aquariums.