Hydroponic kits, grow lights and grow tents
Free delivery across the USA on orders over $50
Tracked standard delivery
Shipped across the USA in 5 to 7 days

LED Grow Light, Dual Head Clip Lamp

$29

Clips To A Shelf Or Tub
Two Heads On A Gooseneck
Timer Built In
40 W Total

Price: $29

Delivery time: 5-7 days after a 24-48 hour handling time
Free delivery across the USA on orders $50+, otherwise a flat $22
Pay by card or PayPal, handled by the payment provider
Voluntary 14-day returns, with no cancellation or restocking fee

Often bought together

Indoor Grow Tent, 47in $269

Product specifications

Heads	2
Total power	40 W
Light source	80 LEDs, 52 red and 28 blue
Colour modes	Red, blue, or both together
Brightness steps	9 (20% to 100% in tens)
Gooseneck length	28 cm (11 in) per arm
Head length	25 cm (10 in) and 22 cm (8.5 in), the two arms differ
Clamp capacity	Up to 6 cm (2.5 in) thick
Head width	20 mm (0.75 in)
Power supply	Plug-in adaptor, 110 to 240 V
Power cord	About 20 cm (8 in)
Stated LED life	50,000 hours
Timer	In line on the cable, three fixed modes: 3, 9 or 12 hours

Shipping & returns

Tracked standard delivery anywhere in the USA. It is free on orders of $50 or more, and a flat $22 below that. Allow 5 to 7 days after a 24 to 48 hour handling time.

Under our voluntary policy, you can contact us within 14 days of delivery to return an item in its original condition and packaging. There is no cancellation, restocking, service, packing or handling fee. You cover return shipping when you change your mind.

If it arrives faulty, damaged, incomplete or simply not what you ordered, we arrange the return at our cost and put it right. Stronger rights under applicable state or federal law remain unaffected.

Shipping details · Refunds and returns

Looking after it

Wipe the heads with a dry cloth when dust builds up, because dust on a lens costs you light. Keep the lamp and the timer away from splashes when you are topping up a reservoir. There is a thin protective film on the light panel when it arrives, and it should be peeled off before first use.

Clips To A Shelf Or TubGrips up to 6 cm, with a pad so it does not mark furniture

Two Heads On A Gooseneck28 cm of bendable neck, aimed wherever the plants are

Timer Built InThree modes, 3, 9 or 12 hours, repeating daily

40 W TotalRuns at roughly the cost of a couple of dollars a month

About this product

Light for one system, not for a room.

A two head clip on LED lamp with a gooseneck and a built in timer, for a single tub or a shelf of seedlings.

A clip on lamp for one system rather than a whole grow. Two heads on a bendable gooseneck, so the light goes where the plants are instead of where the fitting happens to hang.

Nine brightness steps and three colour modes, red, blue or both, with a 3, 9 or 12 hour timer built into the cable so the cycle repeats without you thinking about it.

This is the small end of grow lighting and it is worth being clear about what that means. One lamp with two heads will cover a single 11 cup tub, a propagator tray, or a couple of pots on a shelf. It will not light a tent or a bank of channels, and stretching it to try is the usual way people end up disappointed. If you are lighting a run of plants, the 90 cm strips are the right product.

What it does well is aim. The two arms bend and hold, so instead of one bright spot in the middle of a tray you can put light on both ends of it, or angle both heads at a single plant that is leaning. The clamp takes anything up to 6 cm thick, which covers most shelves, table edges and the lip of a reservoir tub, and it has a thick pad on the jaw so it does not mark what it grips.

The three colour modes are red, blue, and both together. Blue light tends to be associated with compact leafy growth and red with flowering and fruiting, which is why the lamp lets you run one, the other, or the pair. In practice most people leave it on both and use the nine brightness steps to dial it in, moving up as the plants fill out.

The timer sits in the cable rather than in a remote, and it offers three fixed periods: 3, 9 or 12 hours on. Whichever you choose repeats at the same time the next day. That matters more than it sounds, because seedlings respond to a consistent day length and a lamp you have to remember to switch on is a lamp that gets forgotten. It is worth knowing before you buy that the periods are fixed rather than free choice.

On running cost, 40 W for 12 hours a day is about 14 kWh a month. What that costs depends entirely on your own electricity rate, so treat any figure as an estimate rather than a promise.

One practical note from the questions we get asked most: the power cord is short, about 20 cm, so plan on an extension or a socket close to where you are clipping it.

A closer look

Sizes and detail

LED Grow Light, Dual Head Clip Lamp dimensions and specifications

Still deciding?

Not sure yet? That is fine.

If it turns up faulty, damaged, incomplete or simply not what you ordered, it is on us: we arrange the return at our cost and sort it out directly. Tell us as soon as you notice. The full detail is on our refunds and returns page, and you can ask us anything before you order.

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Got questions?

Frequently Asked Questions

Does the power cord have a USB connector?

We are not certain, and we would rather say so than guess. The lamp is supplied with a plug-in mains adaptor, and that is how most customers run it. The manufacturer's own specification sheet also shows a USB connector, while the answer previously published on this page said there was none. We have asked our supplier to confirm which applies to the current version. If running it from USB matters to you, email us before ordering and we will check.

Can the lamp stand up on its own without being clipped to something?

No. It has to be clipped to something. There is no base or stand.

How long are the LEDs rated to last?

The manufacturer rates them at 50,000 hours.

Is there a plastic film to remove before use?

Yes. There is a thin protective layer on the light panel and you should peel it off before you switch the lamp on.

How long is the gooseneck?

Each bendable arm is about 28 cm (11 inches). The two light heads are different lengths, 25 cm (10 inches) and 22 cm (8.5 inches), which is what lets them sit alongside each other rather than clashing. The connectors add a little on top.

How thick a surface can the clamp grip?

Up to about 6 cm, or 2.5 inches. That covers most shelves, desk edges and the rim of a reservoir tub.

Will the clamp mark my furniture?

There is a thick EVA pad on the jaw to protect the surface you clip it to. The light itself will not affect furniture.

How long is the power cord?

About 20 cm, which is 8 inches. It is short, so plan on a socket or an extension near where you clip the lamp.

How many brightness settings are there?

Nine, running from 20% up to 100% in steps of ten.

What are the three colour modes?

Red only, blue only, or both together.

Can I use it for starting vegetable seeds?

Yes. Seed starting is one of the things it suits best, because a propagator tray is about the area two heads can cover properly.

Will it work for fruiting plants and herbs?

It can be used for potted herbs, flowers and small fruiting plants as well as hydroponic growing. Whether it is enough light depends on how many plants you are covering, not on the type.

How do I run it on a 12 hours on, 12 hours off cycle?

Use the 12 hour timer mode. The control unit on the cable offers three fixed options, 3, 9 or 12 hours on, and whichever you pick repeats at the same time the next day. There is no way to set an arbitrary period, so 12 on and 12 off is the closest of the three to a standard cycle.

Will it increase my electricity bill much?

It draws 40 W, so 12 hours a day is roughly 14 kWh a month. What that costs depends on your own rate, so we would rather you worked it out from your bill than took a figure from us.

Is this enough light for the 108 cup system?

No. That system is 55 inches wide and needs a run of light along it. The 90 cm strips are the right product for it.

Is it enough for the 11 cup system?

Yes, that is the size it is meant for. Two heads cover a single tub.

Can I use more than one lamp together?

Yes. Each one is a separate lamp with its own plug and its own timer, so two lamps means two sockets.

Does it come with a bulb I will need to replace?

No. The LEDs are built into the heads and are not user replaceable, which is why the 50,000 hour rating matters.

How far above the plants should it sit?

Start around 30 cm above the canopy and watch the plants. If growth is pale and stretched, move it closer or turn the brightness up. If leaves look bleached or curl away, back it off.

Does it get hot?

It runs warm rather than hot, which is normal for LED. It should not be pressed directly against leaves.

Can I use it in a grow tent?

You can clip it inside one, but it is sized for a single plant or tray. A tent is usually being lit as a whole space, which is a job for the strips.

Is it waterproof?

No. Keep it clear of splashes, especially when you are topping up or changing the nutrient solution.

What is the difference between this and the 90 cm strips?

Coverage and layout. This is one lamp aimed at one place. The strips are nine linked tubes that light a line of plants, and they need somewhere to mount along that line.

Does the timer remember the setting after a power cut?

Treat it as needing to be reset. The cycle counts forward from the moment you switch it on, so an interruption shifts it. Check it after any outage.

Can I dim it while the plants are seedlings?

Yes, and it is a sensible way to use it. Start lower and work up as the plants establish.

Does it need assembly?

No. It arrives ready to clip on and plug in. The only step is peeling the protective film off the panel.

What voltage does it run on?

It is supplied for US mains with a standard plug.

Does red light or blue light matter more?

Blue is generally associated with compact leafy growth and red with flowering and fruiting. For most people growing herbs and salad, running both is the simplest answer.

Can I leave it on 24 hours a day?

We would not. Most plants need a dark period, which is the reason the timer is there.

What is in the box?

The lamp with its two heads and gooseneck arms, the clamp, and the power cord with the in line timer.

The complete guide

Choosing a grow light for a small indoor setup

4 min Hydroponics Company

Lighting a small hydroponic setup is mostly a question of area. Work out the footprint you need to cover, then pick the fitting that covers it, rather than picking a wattage and hoping.

One lamp, or a run of strips

A two head clip lamp lights a spot. That is the right answer for a single 11 cup tub, a propagator tray of seedlings, or a couple of pots on a kitchen shelf. Two arms mean you can put light at both ends of a tray instead of one bright patch in the middle.

A row of plants is a different problem. A 36 cup kit, a 108 cup system or a shelf running the length of a wall wants a line of light, which is what the linked 90 cm strips are for. Trying to stretch one clip lamp across a system is the most common way people end up with pale, stretched growth and conclude that hydroponics does not work.

Height, and reading the plants

Start about 30 cm above the top of the canopy. After that the plants will tell you more than any chart. Pale, leggy growth reaching towards the lamp means not enough light: lower it or turn it up. Leaves that look bleached, or that curl away from the light, mean the opposite.

Move it in small steps and give it a few days between changes. Plants respond over days, not hours, and it is easy to chase the problem past the point where it was solved.

Day length matters more than intensity

A consistent photoperiod does more for seedlings than a brighter lamp. Something in the range of 12 to 16 hours suits most leafy crops, and the important part is that it is the same every day. That is the whole reason the timer is built into the cable rather than sold separately: a lamp you have to remember to switch on is a lamp that gets forgotten on the days it matters.

Most plants also need a dark period. Running a light continuously is not a shortcut.

Colour modes, honestly

Blue light is generally associated with compact leafy growth and red with flowering and fruiting, which is why this lamp offers red, blue, or both. If you are growing herbs and salad and you would rather not think about it, run both and use the brightness steps instead. The colour switch earns its keep if you are deliberately pushing a plant through a stage.

Running cost

At 40 W, twelve hours a day comes to roughly 14 kWh a month. What that is worth in money depends entirely on your own electricity rate, so the useful number is on your bill rather than on this page.

What it will not do

It is not waterproof, so keep it clear of the reservoir when you are topping up. The LEDs are built in and are not replaceable, which is why the 50,000 hour rating is the number to look at. And the power cord is genuinely short at about 20 cm, so check there is a socket where you plan to clip it before the box arrives.

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