Do you want to boost your indoor growing with a high-end LED lighting system without breaking the bank? Discover the Lumatek Attis 300W (also called Lumatek ATS 300W Pro), an LED panel that combines full spectrum, performance and energy savings. This compact 300 watt model offers excellent efficiency for an area of about 1 m², perfect for abundant harvests. We'll explain everything: technical specs, optimal settings for each growth phase, ideal distance from the plants, 2025 pricing and installation tips. At GrowLED, our products are tested under real conditions: take a look at the Lumatek Attis 300W Pro - a guarantee of professional results! Ready to harvest more? Let's go!
Coverage and distances for the 300W LED
To get the most out of your Lumatek LED panel, you need to master the light coverage and installation height. With a 120° angle and a photon flux of 816 µmol/s (PPF), the Attis 300W evenly lights 1 m² with no shaded areas. The photons are distributed harmoniously, ensuring steady growth and balanced flowering. Position your lamp between 30 and 45 cm during the vegetative stage and between 40 and 60 cm during flowering to benefit from its energy efficiency of 2.7 µmol/J.
What area and what height
The ideal distance between the Lumatek Attis 300W Pro and your plants varies depending on their development stage. In a 100x100 cm tent, keep 35-40 cm during the vegetative stage for a PPFD between 600 and 800 µmol/m²/s - ideal for sturdy stems. During flowering, move slightly further away to 45-55 cm to avoid light stress while keeping around 820 µmol/m²/s. For an 80x80 cm area, you can reduce to 30-35 cm with no risk.
Thanks to its 120° angle, coverage is perfectly even, unlike older HPS models. The mix of LEDs (white, deep-red and far-red) reproduces natural, balanced light. No more need to constantly move your plants around - every zone receives exactly the same light intensity. A real time-saver and boost to efficiency!
- Cutting phase: 50-60 cm with intensity reduced to 25-40% for optimal rooting without overheating.
- Vegetative stage: 35-45 cm at 75-85% intensity, perfect for dense growth and preparing your plants for flowering.
- Flowering stage: 40-60 cm at 90-100% to maximize flower production thanks to the red-enriched spectrum.
Our tests show that at 35 cm over 1 m², you get up to 22% higher yield compared to an installation at 50 cm. Watch your plants closely: leaves curling? Raise the lamp by 5 cm. Stems stretching? Bring it slightly closer. The Lumatek LED lighting system is easy to use, but observation remains essential for a perfect result!
Heat management and quiet operation
The ATS 300W panel is fitted with an aluminum heat sink that keeps the temperature under 45°C at full power - and no fan means zero noise. Compared to older 600W HPS models, it generates much less heat (about 1082 BTU/h versus more than 2000 BTU/h), which saves you on ventilation and air conditioning. Reviews of the Lumatek ATS 300W Pro confirm it: even after 12,000 hours of use, no drop in performance.
With IP65 certification, this lamp resists humidity perfectly (up to 70% during flowering). Its power factor of >0.95 keeps consumption stable at around 300 actual watts, or about 3.6 kWh for 12 hours of lighting. At the average French rate, that's about €0.65 per day - a choice that's both economical and eco-friendly.
200W vs 300W comparison
The Lumatek Attis 200W produces 508 µmol/s over 0.6 m² of coverage. The 300W, meanwhile, goes up to 816 µmol/s, offering +60% photon flux for only +50% consumption. In an 80x80 cm or 100x100 cm tent, the 300W guarantees better light penetration and denser harvests, while allowing precise adjustment of intensity based on needs.
Our tests show that the 300W reaches 400-500 g/m² versus 250-350 g/m² for the 200W under the same conditions. The initial extra cost (€50 to €80 depending on the retailer) is quickly paid back from the very first harvest. For a 60x60 cm box, the 200W remains suitable, but beyond that, the Lumatek ATS 300W becomes the most profitable investment for maximizing your yields.
LED settings and yield
To optimize every step of growing, precisely setting your Attis 300W grow light panel is crucial. The Digital Panel Plus 2.0 driver allows gradual adjustment from 0 to 100% in 1% steps or via convenient presets (25/50/75/100%). The goal? To provide an optimal DLI with no light stress, while streamlining your power consumption.
Ideal vegetative stage setting
During the vegetative stage, a Lumatek Attis 300W Pro set for vegetative growth between 75 and 85% at 35-45 cm creates ideal conditions. This setup delivers a PPFD of about 700 µmol·m⁻²·s⁻¹ over 1 m² - perfect for getting short internodes and a compact structure. The blue-rich full spectrum effectively stimulates photosynthesis while controlling plant stretching.
- Cutting stage (0-2 weeks): 25-40% at 50-60cm - promotes rooting without drying out cuttings (success rate >90%)
- Young vegetative growth (2-4 weeks): 50-65% at 40-50cm - supports the development of the first true leaves
- Advanced vegetative growth (4-8 weeks): 75-85% at 35-45cm - ideally prepares the transition to flowering
Precise control (adjustments to within 1%) avoids any light stress. Our tests on basil show that at 80% intensity at 35cm, the stems gain 30% thickness in 3 weeks compared to a fixed setting at 100%. The Lumatek controller also allows dawn/dusk effects and syncing up to 100 panels.
Switching to flowering
For flowering, gradually increase to 90-100% at 40-60cm to maximize the yield of the Lumatek Attis 300W. The enriched spectrum activates the production of dense flowers and improves both weight and terpene profile. According to our observations, this can increase yields by up to 20% on certain varieties.
Start at 90% during stretching, then move to 100% as soon as flowers appear. For sensitive plants, keep 85-90% at 50-55cm. Always watch the tops: curling leaves signal too much light, while excessive stretching indicates too little.
Consumption and energy savings
The Lumatek 300W LED panel consumes about 310W at full power, or 3.72kWh for 12h of daily flowering lighting. Over a month, that's about €20 at the average French 2025 rate. Compared to a 600W HPS, the savings reach 126kWh per month, or nearly €272 per year.
With an efficiency of 2.7 µmol/J, the Lumatek ATS 300W Pro ranks among the most efficient LED grow lights. An average yield of 1.2g/W lets you recoup the investment as early as the second harvest over 1m². The low heat output also reduces air conditioning needs, cutting overall consumption by 15 to 20%.
| Growth phase | Intensity (%) | Distance (cm) | PPFD (µmol·m⁻²·s⁻¹) | Consumption (W) |
| Cutting stage | 25-40 | 50-60 | 200-350 | 75-125 |
| Vegetative stage | 75-85 | 35-45 | 650-750 | 230-260 |
| Flowering | 90-100 | 40-60 | 750-820 | 280-310 |
LED panel use and bars
Setting up a Lumatek Attis LED panel is child's play thanks to the plug-and-play system, but a few tips help optimize its operation. This guide explains how to install the Attis 300W, set its driver and maximize its lifespan while effectively protecting your crop. Ready to enjoy a professional full spectrum? Let's go!
Installation and safety
The Lumatek Attis 300W instructions provided by GrowLED describe each step clearly. Attach the hooks, which support 68 kg, to the rail, hang the panel on the adjustable chains (max 150 cm), then plug the 230V cable into a protected outlet - installation takes less than 30 seconds! Allow 10 cm of space around it for good ventilation, and keep water well away despite the IP65 protection.
- Prior check: carefully inspect cables and connectors, particularly on refurbished models, which we systematically test.
- Secure attachment: tighten the carabiners well and check them regularly, as the fans create slight vibrations.
- Safety distance: keep at least 10 cm from the walls for good heat dissipation and quiet operation.
The Clear Glue coating on the LED bars protects the diodes (white, deep-red and far-red) while letting through 99% of the light. After 18,000h of testing, light output remains above 90%, ensuring a stable full Lumatek ATS spectrum for all growth phases through to flowering. The result: healthy plants with optimal photosynthesis.
For a turnkey installation, our Premium pack includes a carbon filter, Phonic Trap ducting, controller, fabric pots, Biobizz potting soil and Canna Terra nutrients. Discover the complete Attis 300W kit to easily start your indoor growing: plug in, set up, grow!
Settings and control
The 0-10V driver lets you adjust the ideal Lumatek Attis 300W distance using the 25/50/75/100% steps or via the Control Panel Plus 2.0. Easily move from cutting to vegetative growth then to flowering, and adjust intensity in 1% steps to maintain the DLI when it's hot. Example: at 28°C, lower to 85% to limit heat stress while keeping sufficient PAR.
Daisy-chain mode lets you connect up to 100 lamps, ideal for commercial greenhouses or multi-box setups. The 5m cables offer great installation flexibility. Dawn/dusk simulation improves plants' circadian rhythm, increasing vigor by 8% on certain species. The PMS perfectly maintains the blue/red ratio during dimming, unlike low-end drivers that disrupt the full spectrum.
Maintenance and support
Clean the bars and the Clear Glue surface every 3 months with a soft cloth to preserve light output. Regularly check the mounts and make sure the heat sink doesn't exceed 50°C; in a 1m² box, a 760 m³/h extractor is enough. Discover the refurbished LED grow panel Attis 300W: same performance, reduced environmental impact, attractive price.
Our one-year premium warranty (3 years on new units) covers the driver and Lumatek LED diodes with replacement within 7 days in case of a problem. GrowLED support provides wiring diagrams, distance charts and maintenance tips, including for the Lumatek 300W Pro. After 60,000h of use, the panel keeps more than 90% of its output: proof that a well-maintained Lumatek Attis lasts a very long time!
