Extendable Aquarium LED Light Bar
Telescopic arms, so one lamp fits several tanks.
Telescopic legs mean one lamp fits several tank widths, so it moves with you when you upgrade rather than becoming the wrong size the moment the tank changes.
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- Telescopic legs extend to span wider tanks
- 8500K daylight tone at 2300 lumens
- Ships with a UK three-pin adapter
- Rated for freshwater and marine tanks
- Rocker switch on the housing, no fumbling at the socket
Size: 36 LED (smaller tanks)
Why you'll love it
Made for happy, healthy pets
Tanks get replaced, lighting shouldn't
A fixed-width lamp is scrap the moment you upgrade the tank. Legs that slide mean the same bar carries over, which is why this outlives two or three tanks in practice.
8500K is the tone plants actually want
Warmer bulbs make a tank look yellow and do little for planted growth. 8500K reads as daylight, so greens stay green and fish colour is not flattened out.
A UK plug, not an adapter on an adapter
Most aquarium lighting at this price arrives with a two-pin EU plug and a travel adapter hanging off it behind the cabinet. This ships with the right head fitted.
Good fit if
- Replacing a dim or failed hood light
- Anyone likely to change tank size within a few years
- Marine as well as freshwater setups
- Buyers who want a UK plug rather than an adapter chain
Look elsewhere if
- You want built-in dimming or a timer, which this lacks
- You keep demanding high-light plants needing a dedicated unit
- Your tank has a solid hood with no rim to sit legs on
Colour temperature and what it does
Eight and a half thousand kelvin is a cool daylight tone. It renders greens and blues cleanly, which makes a planted tank look natural rather than yellow, and it sits in the range most freshwater keepers settle on. Warmer light makes a tank look muddy; much cooler starts looking clinical.
For plants, colour temperature matters less than people assume. Plants use light across the spectrum and respond mainly to intensity and duration. Colour temperature is largely about how the tank looks to you, which is a legitimate reason to care about it but a different question from growth.
Duration over intensity
The single most useful thing you can add to any aquarium light is a plug-in timer. Six to eight hours a day suits most freshwater tanks, and consistency matters more than the exact figure. Leaving a light on all evening because the tank looks good is the most reliable way to grow a green film on the glass within a fortnight.
If plants are struggling, the answer is usually more intensity rather than more hours. Algae outcompetes plants when light is plentiful and something else is limiting, so a long weak photoperiod feeds algae and starves the plants. Shorter and brighter is the direction to move.
Fitting and depth
Light falls off quickly with depth, so a deep tank needs a stronger unit than a shallow one of the same footprint. Measure the outside width across the rim, since the legs rest on the frame rather than inside it, and check the extended span covers that before ordering.
Position it centrally along the length so the front glass and the back corners get roughly even coverage. Sitting it on a glass cover rather than over an open tank extends its life considerably, because the constant evaporation off an open surface is what eventually gets into the housing.
Keep the tank out of direct sunlight regardless of what light you fit. Sun through a window adds hours you have not accounted for and varies through the year, which is why a tank on a sunny sill grows algae that no amount of adjusting the lamp will fix.
In the box
Everything you need
- LED bar
- UK power adapter
How it works
Simple, from basket to doorstep
- 1
Browse
Shop by pet or category to find exactly what your cat or dog needs, no wading through thousands of listings.
- 2
Order
Check out securely with card, PayPal or one-tap Apple Pay & Google Pay. Free delivery over $59.
- 3
Delivered
Fast, tracked dispatch straight to your door, and a happier pet before you know it.
The details
Specifications
- Colour temperature
- 8500 K
- Output
- 2300 lumens
- Power
- Input 110–240 V, output DC 12 V 2 A
- Span
- Extends to about 95 cm
- Suits
- Freshwater and marine
- Certification
- CE, RoHS
Size guide
| Version | Suits | Notes |
|---|---|---|
| 36 LED | Smaller tanks, up to about 60 cm | Adequate for low-light plants |
| 72 LED | Wider tanks, up to about 95 cm span | Brighter, better for a planted setup |
Measure the outside width across the tank rim, since the legs rest on the frame. For a deep tank choose the higher output, because intensity falls off sharply with depth.
Good questions
Before you buy
The 36 LED suits smaller tanks and the 72 LED wider ones. Both share the same telescopic legs, so measure the outside width of the rim rather than the water line.
The supplier rates it for fresh and salt water. As with any aquarium lighting, keep the adapter above the tank and run a drip loop in the cable so condensation runs off before it reaches the plug.
There is a rocker switch on the housing but no dimmer or built-in timer. If you want a photoperiod, put a plug timer on the adapter, which is cheaper than buying a controllable fixture.
Measure the outside width across the rim and check the extended span covers it. The 36 LED suits tanks to about 60 cm; the 72 LED covers wider tanks and gives more usable light in a deep one.
It is rated for both fresh and salt water. Salt creep is corrosive, so wipe the housing periodically and keep it above the splash zone.
There is no built-in dimmer or timer, just a rocker switch. A plug-in mains timer costs very little and is the single most useful addition, since a fixed photoperiod is what keeps algae down.
Last reviewed August 30, 2026