• Premium Quality LED Diodes 
• Available with Fixed or Dimmable Control
• Free & Fast UK Delivery
• Set of Four Lights Per Pack
• Full Spectrum
  
• Perfect for Microgreens, Salads & Fruits
• Versatile Application
• Super Stealthy
• IP65 Waterproof
• Ultra Low Power Consumption
• Zero Noise
  
• 80w Power Output (20w Per Bar)
  
• Pay As You Grow in 3 instalments with Klarna

Spider Farmer GlowBar20 LED Grow Light Strips.

There’s a moment, usually after you’ve tried to light a shelf with something completely unsuitable, when you realise most grow lights are designed with all the subtlety of a stadium floodlight. Big, loud, overkill. And then along comes the Spider Farmer GlowBar20, which takes one look at that chaos and calmly suggests a better way.

This isn’t about brute force. It’s about refinement. Precision. Control. The sort of lighting solution that doesn’t try to dominate your space but instead slips neatly into it and gets on with the job - efficiently, quietly, and rather smugly.

At 58.5 centimetres per bar, the Spider Farmer GlowBar20 is essentially the older, more capable sibling of its smaller counterpart. Still slim, still elegant, but now packing a bit more authority. Four bars, each drawing 20 watts, combine for a total system power of 80W. Not enormous, not intimidating, but more than enough to make a noticeable difference where it matters.

The Spider Farmer GlowBar20 doesn’t scream for attention. Instead, it stretches out - literally - and delivers light exactly where you need it.

With a coverage area of approximately 70 × 35 cm using two bars per tier, it’s perfectly suited to shelves, racks, propagation setups, and multi-level plant stands. It’s not trying to light an entire room. That would be missing the point entirely. This is about targeted, efficient illumination in spaces where traditional fixtures simply don’t belong.

And thanks to a luminous flux of 11,680 lumens, there’s nothing timid about the output. It’s bright, consistent, and crucially, usable. Not wasted in heat, not scattered aimlessly, but directed with purpose. 

Full Spectrum. Properly Done. 

Now, let’s talk about the light itself, because this is where the Spider Farmer GlowBar20 earns its keep.

You’re getting a carefully balanced full-spectrum blend of 5000–5500K cool white, 3000–3500K warm white, and a targeted 650–660nm red. In other words, a spectrum that mimics natural sunlight without any of the unpredictability or seasonal mood swings.

The result is a gentle, stable output that supports the entire growth cycle. Seedlings get the soft encouragement they need, established plants receive consistent energy, and everything in between benefits from a spectrum that’s been engineered, not guessed.

It’s not harsh. It’s not overwhelming. It’s just… right.

Efficiency That Borders on Ridiculous. 

Here’s where things get slightly absurd.

The Spider Farmer GlowBar20 achieves a PPE of ≥2.2 µmol/J, which, for something this compact, is frankly impressive. More impressive still is its ability to replace a traditional 200W plant light while consuming just 80W.

That’s not just efficient. That’s the sort of performance that makes your electricity meter breathe a sigh of relief.

With 384 LEDs distributed across the four bars, the light is evenly spread, ensuring there are no dark patches, no hotspots, and no awkward gaps where plants start leaning dramatically in search of better conditions.

Everything gets what it needs. Nothing gets wasted.

Dimmable Control or Fixed Simplicity.

The Spider Farmer GlowBar20 comes in two distinct personalities, both equally compelling.

There’s the fixed-output version, which does exactly what it says on the tin. Plug it in, switch it on, and enjoy consistent, reliable performance without the need for adjustment. Simple. Honest. Effective.

Then there’s the dimmable version, which introduces a bit more finesse. With three brightness levels - 100%, 50%, and 10% - you can tailor the light intensity to match different growth stages. Gentle for early development, stronger as things progress, and never more than what’s actually needed.

It even remembers your last setting, thanks to its smart memory function. Turn it off, come back later, and it picks up exactly where it left off. No fiddling. No resetting. Just continuity.

Built For The Real World. 

Compact lighting often feels fragile, like it might give up the moment humidity enters the conversation. The Spider Farmer GlowBar20, however, is having none of that.

Each bar is housed within a heat-resistant PC clear lampshade and carries an IP65 waterproof rating. That means it shrugs off dust, ignores moisture, and carries on working in environments that would make lesser lights panic slightly.

Greenhouses, propagation chambers, high-humidity grow tents - it handles them all without complaint.

And when it does eventually need a clean, it’s a simple wipe and done. No drama. No fuss.

High Performance. Low Cost.

• Total Power: 80W (4 × 20W bars)
• PPE: ≥2.2 μmol/J
• Diode Count: 96 per bar
• Luminous Flux: 11680 lm
• Spectrum: 3000K + 5000K + 660nm
• Input Voltage: AC100–277V
• IP Rating: IP65 waterproof
• Dimensions (per bar): 59 × 3.5 × 3.2 cm
• Weight (per bar): 186g

 

Super Easy Installation. 

Some lighting systems arrive with instructions that read like a puzzle designed by a bored engineer. The Spider Farmer GlowBar20 is refreshingly different.

It’s plug-and-play. Properly plug-and-play.

With clips, cables, and mounting accessories included, you can install the entire system in minutes. Shelves, racks, cupboards, countertops—if there’s a surface, it will attach to it.

No complicated wiring. No head-scratching. No regret.

Just light, exactly where you want it.

The Glowbar 20. Link. Expand. Scale. 

The Spider Farmer GlowBar20 isn’t just a standalone product. It’s part of a system that grows with you.

With daisy-chain capability, you can connect up to 12 bars on 110V systems or an impressive 24 bars on 220V setups. That means you can start small and expand logically, without needing to redesign your entire layout every time you add more plants.

It also supports mixed connections, meaning dimmable and non-dimmable bars can coexist in the same setup. The dimmer controls what it can, and everything else carries on as normal.

It’s flexible. Adaptable. Sensibly designed.

The Numbers That Matter.

Total system power sits at 80W across four 20W bars, delivering a luminous flux of 11,680 lumens and an efficiency of ≥2.2 µmol/J. Each bar measures 585 × 33 × 32 mm, making it slim enough to disappear into tight spaces while still providing meaningful coverage.

Input voltage ranges from AC100–277V, ensuring compatibility across different regions, and the IP65 rating guarantees resilience in demanding environments.

It’s not just a collection of specs - it’s a carefully balanced system designed to perform consistently over time.

The Spider Farmer GlowBar20 LED Grow Light Strips are a lesson in doing things properly.

They don’t try to be everything. They don’t rely on brute force or unnecessary complexity. Instead, they deliver precise, efficient, full-spectrum lighting in a format that actually makes sense for modern indoor growing.

Whether you choose the fixed-output version for its simplicity or the dimmable version for its flexibility, you’re getting a system that’s reliable, scalable, and quietly brilliant.

Because sometimes, the smartest solution isn’t bigger.

It’s better.

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