Lighting

• 🌱 Grow LED: Efficient, cool, and powerful full-spectrum LED plant lamps with high µmol/J value.
• 🔥 HPS lamps: Proven HPS/NDL technology with high light intensity – ideal for large areas and flowering stages.
• 🔧 Lamp accessories: Reflectors, ballasts, hangers, timers, controllers & measuring devices for perfect plant light.

Plants rely on light for photosynthesis. Indoors – even at bright windows – natural daylight is often insufficient to provide the necessary photon density for compact growth, strong lateral shoots, flowering, and fruit set. Even a meter away from the window drastically reduces effective light; in winter, this problem intensifies due to short days and low sun angles. The solution: targeted plant lamps that deliver the right plant light at the right intensity and spectrum.

Whether HPS lamps (NDL) or Grow LEDs – we have the right lighting for every need and plant. Discover high-quality plant lighting and plant lamps at fair prices!

Three terms are especially important in practice:

• 💡 PAR (Photosynthetically Active Radiation): The wavelength range of about 400–700 nm used by plants for photosynthesis.
• 📈 PPFD (Photosynthetic Photon Flux Density): How many photosynthetic photons (µmol) per square meter per second reach the leaf surface – the higher, the "brighter" for the plant.
• 🌈 Spectrum: The distribution of wavelengths (blue, green, red, far-red, etc.). Spectrum affects morphology, internode spacing, flowering induction, and secondary metabolites.

For compact vegetative growth, a higher blue portion is advantageous, while flowering/fruiting benefits from red and far-red. Full-spectrum Grow LEDs combine these ranges so you get optimal plant light across all stages – without changing lamps.

The McCree curve describes how efficiently different wavelengths contribute to photosynthesis. Blue (~450 nm) supports leaf formation and compact internodes, red (~660 nm) drives flowering and fruiting, green penetrates deeper into the canopy and improves light distribution. Modern full-spectrum LED plant lamps reproduce these ranges evenly – maximizing your plants’ potential.

Grow LEDs have become the standard for plant lighting. Reasons:

• ⚡ High efficiency (µmol/J): More photons per watt – saves energy at the same PPFD.
• ❄️ Low heat output: Less residual heat, lower risk of burning or heat stress, easier in summer.
• 🌈 Full spectrum: One panel for growth and flowering – ideal for grow tents.
• ⏳ Long lifespan: 50,000 h+ typical; minimal maintenance.
• 🎛️ Dimmable & controllable: Fine-tune intensity and spectrum with controllers.

HPS lamps (NDL/HPS) still score with high light intensity per € investment – especially for large areas. However: more heat, higher energy consumption, less spectral flexibility. For small to medium setups, we usually recommend Grow LEDs, while HPS remain a valid option for certain budgets/areas.

In winter, plants often develop soft, leggy shoots and small, pale leaves – a typical sign of light deficiency. Specially designed plant lamps compensate for these deficits, regardless of location or season. This keeps leaf structure, internode spacing, and flower set stable – whether for spring propagation, rooting cuttings, or winter harvest of herbs and salad greens.

In everyday language, these terms are often used interchangeably. Technically, the fixture is the complete housing including reflector, cooling, driver/ballast, and hanger. The lamp or bulb is the actual light source (LED modules, HPS bulbs, etc.). Important for you: The combination must match. In lamp accessories you will find suitable hangers, cables, controllers, and measurement devices.

A full-spectrum Grow LED lamp covers the entire life cycle:

• 🌱 Germination & cuttings: Low PPFD (100–300 µmol/m²s), higher blue portion, longer photoperiod (18–20 h).
• 🌿 Vegetative growth: 300–500 µmol/m²s, 18 h light, focus on compact, node-rich growth.
• 🌸 Flowering/Fruiting: 600–900+ µmol/m²s (depending on species), 12 h light, more red-focused spectrum.

With dimmers/controllers, you can adjust intensity according to stage and genetics, avoiding light stress and optimizing yield/quality.

HPS lamps provide high photon density and are suitable for flower-heavy crops and large areas. Advantages: high peak PPFD, low purchase cost. Disadvantages: high power consumption, strong heat input, less spectral control, more frequent lamp replacement. For beginners, a cost comparison with LED is worthwhile – LEDs often pay off through energy savings and cooling advantages.

1. Area & tent size: Choose the lamp suitable for net cultivation area (e.g., 60×60, 80×80, 100×100 cm). Follow manufacturer recommendations.
2. PPFD target values: Plan 300–1000 µmol/m²s depending on crop. Flowering/fruiting often 600–900 µmol/m²s.
3. Efficiency (µmol/J): Higher efficiency means less electricity for the same PPFD.
4. Spectrum: Full-spectrum LED plant lamps for “one-lamp-fits-all” or spectrum switches (Veg/Bloom) for fine-tuning.
5. Heat management: Passive heatsinks are quiet, active fans are compact – check noise and ambient conditions.
6. Dimmable & controllable: Dimmer, timer, sunrise/sunset simulation, group control save energy and improve quality.
7. Service & warranty: Availability of spare parts, warranty, and support.
8. Budget & operating costs: Calculate total costs over lifespan (electricity, cooling, lamp replacement).

The ideal lamp distance depends on PPFD targets, beam characteristics, and plant stage. Rules of thumb:

• 🌱 Seedlings/Cuttings: greater distance, dimmed (low PPFD, soft light).
• 🌿 Veg: medium distance, moderate PPFD, uniform coverage more important than hotspots.
• 🌸 Flowering/Fruiting: shorter distance (without heat stress), high PPFD, avoid hotspots.

Tip: Hang the fixture with adjustable rope ratchets and use a PPFD meter or manufacturer matrices. Reflective tent walls (Mylar) improve light yield.

More photons often mean more heat at the canopy. Pay attention to:

• 🌬️ Airflow: Exhaust with carbon filter, circulation fans against hotspots, fresh intake air.
• 🌡️ Temperature & VPD: 24–28 °C (depending on species), correct leaf/air humidity balance.
• 🔌 Electrical safety: Splash protection, IP rating, neat wiring, suitable ballast/power supply.

Everything you need is in Lamp accessories – from hangers to timers and measuring devices.

The photoperiod (hours light/dark) controls developmental processes. Examples:

• 🌿 Growth: 18/6 (light/dark) – fast vegetative growth, compact structure.
• 🌼 Flowering/Fruiting: 12/12 – induces flowering in short-day sensitive species.
• 🥗 Herbs/Salads: often 16–20 h light for continuous biomass.

The DLI (Daily Light Integral) describes the total daily photon sum (mol/m²/day). You reach the target DLI by combining PPFD and light hours. Example: 500 µmol/m²s over 18 h results in a higher DLI than 500 µmol/m²s over 12 h.

Example calculation: A 240 W Grow LED runs 18 h/day (vegetative). Daily consumption: 0.24 kW × 18 h = 4.32 kWh. At €0.35/kWh ≈ €1.51/day. With dimming, smart control, and good efficiency, you reduce costs at the same PPFD – a major advantage of modern LEDs over HPS.

• 🌈 Full-spectrum LED plant lamps for all stages – no bulb changes needed.
• ⚡ Higher efficiency (µmol/J) significantly reduces electricity costs.
• ❄️ Less heat – ideal for small tents and summer grows.
• 📏 Uniform coverage through matrix/bar designs.
• 🎚️ Dimmers & controllers for precise light management.
• ⏱️ Long lifespan and low maintenance effort.

Browse the subcategory Grow LEDs to find the right panel for your area and style.

• 🏟️ Large areas with good exhaust/cooling.
• 🌸 Flower-focused crops that need extremely high PPFD.
• 💶 Limited start budget prioritizing initial purchase over operating costs.

Note: HPS/NDL generates a lot of heat, requires space and proper airflow. Its spectrum favors flowering but is less flexible than LED.

• 🪞 Reflectors & frames for directional light and even coverage.
• ⚡ Ballasts/drivers – correctly chosen for safety and efficiency.
• 🪝 Hangers, rope ratchets for precise distance adjustment.
• ⏲️ Timers & controllers for stable photoperiods.
• 📊 Measuring devices (Lux/PPFD, thermo-/hygrometers) for objective control.

Find everything collected in lamp accessories.

1. PPFD too low during flowering (poor yield).
2. Distance too high (light wasted) or too low (light stress).
3. Missing spectrum (e.g., only cool white for flowering).
4. Poor airflow – hotspots & heat buildup.
5. Running without dimmer – unnecessarily high costs/stress.
6. Cheap, unsafe power supplies/ballasts.
7. No timer – irregular photoperiods.
8. Neglecting heatsink/reflector cleaning.
9. Overlooked sidewalls – insufficient light at lower canopy.
10. No DLI measurement/estimation – unclear control.

Work through three steps to reach the ideal solution:

1. Define your area: interior tent dimensions (e.g., 80×80). Consider real net area (pots/reservoirs).
2. PPFD target per crop: Leafy greens: 250–400 µmol/m²s; fruiting/flowering: 600–900 µmol/m²s.
3. Choose technology & budget: Grow LED for efficiency & control; NDL for low entry cost and large areas with strong exhaust.

Extras like dimming, controllers, daisy-chain, extendable bar segments, and IP rating can make the difference between “works” and “perfectly tuned.”

Experienced growers combine full-spectrum Grow LEDs with spot warm/red boosters or individual far-red channels. Goal: compact growth + strong flower induction. Mixed LED + HPS operation is possible: LED provides the base spectrum and uniform PPFD, HPS adds punchy peaks – note the additional heat.

Which PPFD do I need? – Most fruiting/flowering plants need 600–900 µmol/m²s at the canopy. Leafy greens/herbs 250–500 µmol/m²s suffice.

Is a cool-white LED panel enough? – For seedlings yes, for flowering/fruiting usually missing red/far-red. Better to use full-spectrum LED plant lamps.

LED or HPS/NDL? – In small to medium tents usually LED. In large rooms with good cooling, HPS can make sense.

How long should the light be on? – Veg: 18 h; Flower: 12 h; Leaf greens: 16–20 h. Varies by species/genetics.

• 📐 Which tent/area size are you lighting?
• 🎯 Which crop and target PPFD?
• ⚖️ Prefer Grow LED (efficient, cool) or NDL (low cost, warm)?
• 🎛️ Need dimmer/controller, daisy-chain, app control?
• 🌬️ How do you handle exhaust & intake? (summer operation!)
• 🧰 Do you have lamp accessories like hangers, timers, measuring devices, cables planned?

• 📏 60×60 cm: compact Grow LED 80–200 W, PPFD target 400–700 µmol/m²s.
• 📏 80×80 cm: 160–300 W full-spectrum LED plant lamps, uniform bar designs preferred.
• 📏 100×100 cm: 350–500 W LED or 400–600 W HPS – depending on climate and crop.
• 📏 120×120 cm+: modular bar LEDs 600–800 W (dimmable!) or 600–1000 W HPS with strong exhaust.

Note: Wattage is only a rough guideline – the resulting PPFD at the canopy is decisive.

More than just “bright”: qualitative parameters like spectrum (including far-red), flicker-free, homogeneous distribution, CRI for visual inspection, gentle ramps (sunrise/sunset), and temperature compensation for LED drivers make the difference. Use certified drivers, solid cooling, and secure connectors.

• 🧹 Remove dust regularly (better cooling, more light output).
• 🧊 Keep cooling fins free, do not block airflow.
• 🔌 Check plug connections, manage cables.
• 🔧 For HPS/NDL: replace/clean bulbs and reflectors regularly.

The right plant lamp improves growth, yield, and quality of your plants significantly. Full-spectrum Grow LEDs are the most flexible, efficient, and sustainable option for almost all applications. HPS/NDL still has advantages in very large areas or when maximum peak intensity is needed. Combine with correct mounting, climate, photoperiod, and accessories for best results.

Explore our subcategories: Grow LEDs, HPS/NDL lamps, and lamp accessories to find your perfect solution.