LED grow lights are one of the most efficient options for indoor gardening. They use less power, run cooler than HPS, and provide a full spectrum of light for every growth stage. For a typical 1.2m × 1.2m grow tent, most growers use a 400–600W LED bar fixture.
LED grow lights use light-emitting diodes to give plants the specific spectrum they need to grow indoors. Modern fixtures are designed for seedlings, vegetative growth, and flowering, allowing you to run one light from start to finish.
Compared to older HPS or CFL systems, LED grow lights offer better efficiency, lower heat output, and a more targeted spectrum for strong, healthy plant growth.
At Dr Blooms, we stock a wide range of LED grow lights for every setup, from small home grow tents to commercial multi-light rooms. You’ll find budget-friendly options, high-performance bar LEDs, and commercial fixtures with very high PPFD output and even light coverage.
LEDs have become the standard for indoor growing because they solve many of the limitations associated with traditional HPS systems:
Lower heat – LEDs run cooler, reducing plant stress and lowering cooling costs
Higher efficiency – More usable light per watt of electricity
Full spectrum output – Supports vegetative growth and flowering in one fixture
Long lifespan – Quality LEDs can last 50,000+ hours with minimal maintenance
No bulb changes – No need to replace lamps every few cycles
Quiet operation – No noisy ballasts and minimal fan noise on modern fixtures
The right LED grow light depends on your grow space and target light levels. Use this guide as a starting point:
0.6m × 0.6m tent – 100–200W LED
0.8m × 0.8m tent – 200–300W LED
1.2m × 1.2m tent – 400–600W LED
1.5m × 1.5m tent – 600–750W LED
2.4m × 1.2m tent – 600–1000W LED (bar-style LEDs recommended)
Browse our full range of LED grow lights by wattage and application:
1000W LED Grow Lights
800W LED Grow Lights
700W LED Grow Lights
600W LED Grow Lights
500W LED Grow Lights
400W LED Grow Lights
300W LED Grow Lights
200W LED Grow Lights
Under Canopy Lights – Designed to improve lower-canopy light penetration
TLED Grow Lights – Low-wattage LED strip lights for propagation and seedlings
All LED Grow Lights – View the complete LED lighting range
If you’re unsure which wattage or model to choose, contact us with your tent size and grow goals and we can recommend a suitable fixture.
Not all LED grow lights are built the same. When comparing fixtures, consider the following:
Diode quality – Look for Samsung, Osram, or LM301-style diodes for high efficiency
Driver quality – Reliable drivers such as Mean Well improve lifespan and safety
Dimmable control – Allows precise PPFD control for seedlings, veg, and flower
Bar-style design – Provides even light distribution and reduces hotspots
PPE rating (µmol/J) – Higher PPE means more light for the same power draw
Most LED grow lights can be run on a simple timer, but using a lighting controller provides greater control and protection. Many modern fixtures can connect to systems such as TrolMaster, Growlink, or brand-specific controllers to enable:
Automatic dimming based on time or temperature
Sunrise and sunset simulation
Overheat protection and emergency dimming
Lighting schedules for different growth stages
Remote monitoring via app or PC (on compatible systems)
We stock LED grow lights suitable for all experience levels and grow environments:
Budget LEDs – Ideal for first-time growers and small home tents
Mid-range fixtures – Strong efficiency and features at a sensible price
Commercial LEDs – High-output bar systems for professional grow rooms
Propagation LEDs – Lower-intensity lights for seedlings, clones, and mother plants
Q1: What are LED grow lights?
LED grow lights use light-emitting diodes to provide plants with the specific light spectrum needed for indoor growth. They are suitable for all growth stages from seedlings through to flowering.
Q2: Why are LED grow lights considered efficient?
LED grow lights use less electricity, produce less heat, and deliver a higher proportion of usable light compared to older HPS or CFL systems.
Q3: What wattage of LED grow light is recommended for a 1.2m × 1.2m tent?
Most growers use a 400–600W LED bar fixture for a 1.2m × 1.2m grow tent, depending on plant type and target light levels.
Q4: What are the benefits of using LED grow lights over HPS systems?
LED grow lights offer improved efficiency, lower heat output, longer lifespan, and full-spectrum lighting compared to traditional HPS systems.
