• Featuring Samsung LM301h Diodes
• Free & Fast UK Delivery
  
• Digital Precision Dimming
  
• Super Stealthy
• Osram 4.24 Red Diodes
• Massively Reduced Electricity Costs
  
• Passive Cooling
• 300w Power Output 
• Zero Noise
• 60000 Hours Life
• 5-Year Warranty

 

Lumatek Zeus Pro 300w 3.1 LED Grow Light. 

If you’re growing in a small space, don’t let that stop you from thinking big. The Lumatek Zeus 300w Pro 3.1 LED Grow Light is what happens when you take top-tier technology, cram it into a compact footprint, and let it loose in your grow room. Whether you’re rocking a modest tent in the spare room or trying to squeeze more out of the gaps between your main lighting units, this tidy little powerhouse has your back. Built for UK growers by UK designers with real UK support, it’s not only well-built - it’s well backed.

Compact Brilliance. 

Let’s start with the specs, because they’re absurdly good. The Zeus 300w Pro 3.1 punches out an impressive PPF of 965 umol/s with an efficacy of 3.1 umol/J, which is frankly outrageous for its size. That means you get more usable light for less electricity - something your plants and your power bill will be equally thrilled about. It’s engineered specifically for a 1.2 x 0.6 metre grow space, making it ideal for tight setups, tiered systems, or filling in those frustrating dark spots between your main lights. And thanks to its linear multi-bar design, you’ll get flawless light distribution across your canopy with no weird hotspots or patchy shadows.

Samsung EVO Diodes. The Heart of the Beast.

Now let’s talk components. The Zeus isn’t just slinging out light - it’s slinging full-spectrum, plant-loving glory, powered by the latest Samsung LM301H EVO and Osram 4.24 diodes. These aren’t budget parts slapped together in a mystery warehouse - they’re the best of the best, delivering balanced intensity across the entire spectrum. Whether you’re in veg or bloom, this LED grow light will keep your plants thriving. And don’t worry about wear and tear - thanks to clear glue-coated bars, you’re getting 99% light transmittance, IP65 waterproofing, corrosion resistance, and a 60,000-hour lifespan. You could grow for over a decade before it even considers getting tired.

Premium Build Quality.

Here’s where it gets clever. The Zeus 300w Pro 3.1 is modular and magnetic, which isn’t just cool - it’s incredibly practical. Snapping bars into place is as satisfying as it is quick, and it also makes maintenance and upgrades dead easy. Need to tweak your spectrum? You can add UV or Far-Red bars to push performance even further. It’s rare to see a grow light at this wattage that offers so much scope for fine-tuning. The magnetic bar design also means if one bar ever stops working, the others will keep going - no sudden plant panic, no ruined crops.

Fully Dimmable & Controllable.

Control freaks rejoice, because Lumatek have gone all-in on lighting precision. The Zeus 300w comes with a manual 0–10V dimmer, letting you step from 25% to 100% power as needed. You can adjust intensity based on plant age, phase, or how sensitive your strains are to light. It's compatible with most grow room controllers too. 

Bigger Performance. Bigger Flowers. Bigger Flavours.

Let’s not ignore the real reason why this unit turns heads: value over time. With less heat output than HPS lamps, you won’t need a monster ventilation setup to keep your room in check. That alone reduces kit cost and running expenses. Add in the huge energy efficiency, the zero need to replace bulbs, and the fact it basically runs for a decade straight, and you’ve got an ROI that makes traditional lighting look like an antique. This thing is designed to outperform and outlast nearly everything else in its category, especially when used in professional or multi-light grow rooms.

A No-Brainer for Serious Growers

Power	300w
Input Voltage	220-240V
Weight	5.9 kg
PPF	965umol/s
Flower Footprint	1.0m x 0.5m
Veg Footprint	1.2m x 0.6m
Diodes	Samsung EVO ^ Osram 4.24
Light Distribution	120
Size	118cm x 50cm x 7cm
Spectrum	3000k, 5000k, 660-665nm, 730nm
PPFD	3.1umol/j
Daily Electricity Cost	£0.74*

Product includes:

• Lumatek Zeus Pro 300w 3.1 LED Grow Light
• UK Power Cord
• Power Supply
• User Manual
• Wire Hangers

*Approximate costs of use based on 75% power for a 12 / 12 flowering cycle. 

*Calculated using the UK: Energy Price Guarantee (July 2025) electricity rate of 26.00 pence per kWh.