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Grow Lights
Grow lights are essential for indoor growing, providing plants with the light they need to grow, develop and produce strong, healthy yields. Whether you’re growing in a tent, grow room or indoor space, the right lighting system plays a crucial role in plant performance.
At Acorn Horticulture, we supply a wide range of LED grow lights and indoor plant lighting systems in the UK. From energy-efficient LED grow lights to full-spectrum solutions for all stages of growth, our range is designed to suit beginners and experienced growers alike. Grow lights are often used alongside grow tents, ventilation systems and complete grow kits to create the ideal indoor growing environment.
Read our comprehensive guide here to find out more!
Popular types: LED grow lights | 600W | Gavita | Propagation Lighting
New
1000w golden lighting system
£190.00 incl. Vat
-20%
elite 720w pro led built in driver
Original price was: £149.00.£119.00Current price is: £119.00. incl. Vat
18w led propagation bar
£15.00 incl. Vat
18W Propagation LED
Boost your plant growth with the 18W Propagation LED Bar — a high-efficiency, long-lasting lighting solution designed for seedlings and cuttings. Delivering superior light output, this compact LED strip provides the perfect light spectrum for healthy propagation in any grow space.
- Energy Efficient: Uses up to 60% less power than traditional fluorescent tubes, reducing running costs while maintaining ideal light levels.
- Long Lifespan: Offers up to 54,000 hours of reliable performance, eliminating the need for frequent replacements.
- Flexible Setup: Easily daisy-chain up to 100 bars on a 20 A circuit for seamless coverage in both small and large grow areas.
- Optimised Light Positioning: For best results, mount 8–12 inches above the canopy and space bars 10–12 inches apart for even light distribution.
- Perfect for Propagation: Provides young plants with everything they need to develop strong roots and healthy early growth.
LEDSTAR 26W Propagation LED | Efficient Blue‑White LED Lighting
£40.00 incl. Vat
The LEDSTAR 26W Propagation LED is designed to provide energy‑efficient, balanced light output for seeds, cuttings and young plants during early growth stages. With a cool blue‑white spectrum (~8262 K) and long‑lasting LEDs rated up to 50,000 hours, this driverless propagation light delivers reliable performance and scalability for propagation shelves, benches, racks or compact grow spaces.
- ✔ 26W full spectrum LED for propagation and vegetative growth
- ✔ Balanced blue‑white spectrum (~8262 K) ideal for young plants
- ✔ Up to 50,000 hours LED lifespan
- ✔ Driverless, lightweight and easy to install
- ✔ Daisy chain up to 30 units for larger propagation areas
- ✔ Energy efficient compared to traditional fluorescent lighting
-9%
AU LED 720W Grow Light UK | Full Spectrum Indoor Grow Light
Original price was: £230.00.£209.50Current price is: £209.50. incl. Vat
AU LED 720W Grow Light is a high-performance full spectrum LED designed for indoor growing, grow tents, and hydroponic systems. With powerful light output, efficient coverage, and a plug-and-play design, it is ideal for growers looking to maximise yields and plant health.
- ✔ Full spectrum LED for veg and flowering stages
- ✔ High output coverage for 1.2m–1.5m grow spaces
- ✔ Built-in driver – no ballast required
- ✔ Energy efficient with strong light penetration
- ✔ Easy setup with plug-and-play design
-16%
Gorilla 720W LED Grow Light UK | Full Spectrum Dimmable LED
Original price was: £130.00.£109.50Current price is: £109.50. incl. Vat
Gorilla 720W LED Grow Light is a high-performance full spectrum LED designed for indoor growing, grow tents, and hydroponic systems. With powerful output, efficient coverage, and a dimmable 6-bar design, it is ideal for growers looking to maximise yields and plant health.
- ✔ Full spectrum LED for veg and flowering stages
- ✔ Covers up to 1.5m x 1.5m grow areas
- ✔ High output (approx. 1944 µmol/s)
- ✔ Dimmable with 0–10V or onboard control
- ✔ Foldable 6-bar design with built-in driver
Elite 1000W HPS DE Dual Spectrum Lamp UK | Dual Spectrum Grow Light Bulb
£40.00 incl. Vat
The Elite 1000W HPS DE Dual Spectrum Lamp is a horticultural high‑output grow light bulb designed for strong PAR performance throughout the plant lifecycle. With a dual spectrum output and a DE (Double Ended) configuration, this lamp is optimised for commercial grow rooms, tents, and hydroponic systems looking for maximum intensity and yield.
- ✔ Dual spectrum HPS lamp for full growth cycle
- ✔ 1000W power for powerful PAR and lumen output
- ✔ Double‑ended design for enhanced stability
- ✔ Ideal for flowering and vigorous growth
- ✔ Compatible with DE HPS ballasts and systems
MaxiBright LED Pro 26W Twin Pack UK | Propagation LED Grow Lights
£59.00 incl. Vat
The MaxiBright LED Pro 26W Twin Pack is a professional propagation lighting solution designed to support seed germination, cuttings, cloning, and early vegetative growth. With bright, cool white LED output and efficient performance, this twin‑pack provides quality light for propagation rack setups, trays, and small grow spaces.
- ✔ Twin pack propagation LEDs
- ✔ Designed for early growth stages
- ✔ Cool white LED output
- ✔ Ideal for seed trays and cloning racks
- ✔ Low heat and energy efficient
-20%
Omega Black 720W LED Grow Light UK | Full Spectrum Indoor Grow Light
Original price was: £199.00.£159.95Current price is: £159.95. incl. Vat
Omega Black 720W LED Grow Light is a high-performance full spectrum LED designed for indoor growing, grow tents, and hydroponic systems. With strong light output, wide canopy coverage, and a practical plug-and-play design, it is ideal for growers looking to improve plant health and maximise yields.
- ✔ Full spectrum LED for veg and flowering stages
- ✔ Suitable for 1.2m to 1.5m grow spaces
- ✔ Foldable bar-style design for even light spread
- ✔ Energy efficient with lower heat than traditional HID lighting
- ✔ Plug-and-play setup for easy indoor growing
-15%
Omega 720W Plus LED Grow Light | Full Spectrum 6-Bar LED Fixture
Original price was: £199.00.£169.99Current price is: £169.99. incl. Vat
The Omega 720W Plus LED is a powerful full spectrum LED grow light designed for serious indoor growers who want high output, excellent efficiency and simple installation. With 2088 µmol/s PPF, 2.9 µmol/J efficacy, a built-in driver and a foldable 6-bar design, it delivers strong, even light coverage for vegetative growth and flowering.
- ✔ High-output 720W full spectrum LED grow light
- ✔ 2088 µmol/s PPF for strong plant growth and flowering
- ✔ 2.9 µmol/J efficacy for efficient light output
- ✔ Built-in driver with no external ballast required
- ✔ Foldable 6-bar design for easy setup and storage
- ✔ 0–10V dimming and RJ11 daisy chain control
LUMii 24‑Hour Heavy Duty Timer | Daily Power Control for Grow Rooms
£12.50 incl. Vat
The LUMii 24‑Hour Heavy Duty Timer is a simple yet rugged mechanical timer engineered for daily on/off control of grow lights, fans, pumps and other grow room equipment. With a dial‑type 24‑hour cycle and heavy‑duty rated contacts, it provides dependable timing for indoor horticulture without complicated digital programming.
- ✔ Mechanical 24‑hour timer for daily power control
- ✔ Heavy‑duty construction for grow rooms and hydroponics
- ✔ Easy dial interface with simple on/off tabs
- ✔ Ideal for grow lights, fans, pumps and ballasts
- ✔ No programming needed — set and forget
- ✔ Compatible with UK mains sockets
26W Clone LED STAR by Loadstar UK | Propagation LED Grow Light
£40.00 incl. Vat
The 26W Loadstar Clone LED STAR is a specialised propagation LED designed for supporting seeds, cuttings, clones, and young plants. With a compact, energy‑efficient LED design, this light is ideal for small propagation areas, cloning racks, and early growth stages in grow tents and hydroponic setups.
- ✔ 26W propagation LED from Loadstar
- ✔ Ideal for seedlings, cuttings & clones
- ✔ Low heat emission — suitable for close proximity
- ✔ Energy‑efficient LED design
- ✔ Simple installation in propagation areas
1x ballast2x ballastfixture no ballast
LUMii BLACK² 720/960 LED Grow Light | Full Spectrum Modular LED
Price range: £220.00 through £260.00 incl. Vat
The LUMii BLACK² 720/960 LED is a high-output, full spectrum LED grow light designed for serious indoor growers who want powerful performance, flexible coverage and excellent efficiency. With a modular 6-bar design, up to 2596 µmol/s PPF output and the option to run from one or two LUMii BLACK ballasts, it is ideal for growers upgrading from traditional HPS lighting to a more efficient LED setup.
- ✔ High-output full spectrum LED grow light
- ✔ Runs at 720W with one ballast or up to 960W with two ballasts
- ✔ Maximum PPF output of up to 2596 µmol/s
- ✔ Modular 6-bar fixture can also be used as two separate 3-bar lights
- ✔ Ideal coverage for a 1.5m x 1.5m grow area
- ✔ Excellent upgrade from 600W or 1000W HPS grow lighting
-10%
Lucalox 600W Bulb UK | High Pressure Sodium Grow Light Lamp
Original price was: £20.00.£18.00Current price is: £18.00. incl. Vat
The Lucalox 600W Bulb is a premium high pressure sodium (HPS) grow light lamp engineered for strong PAR output and sustained plant performance in indoor grow rooms, hydroponic systems, and grow tents. Known for reliability and consistent light emission, it provides excellent coverage for flowering and growth stages.
- ✔ High pressure sodium (HPS) 600W lamp
- ✔ Strong PAR output for vigorous growth
- ✔ Ideal for flowering stages
- ✔ Standard E40 base for easy fitting
- ✔ Works with most 600W HPS ballasts
-19%
Omega 600W Digital Lighting Kit UK | Complete HPS Grow Light Kit
Original price was: £54.95.£44.50Current price is: £44.50. incl. Vat
Omega 600W Digital Lighting Kit is a complete grow light setup designed for indoor growing, grow tents, and hydroponic systems. With a digital ballast, reflector, and dual spectrum lamp included, it is an ideal choice for growers who want a reliable lighting kit for both vegetative and flowering stages.
- ✔ Complete kit with ballast, reflector, and lamp
- ✔ Suitable for veg and flowering stages
- ✔ Ideal for 1.2m x 1.2m grow spaces
- ✔ Digital ballast for efficient performance
- ✔ Great choice for beginners and full grow setups
Powerplant Metal Halide Lamps 400W & 600W UK | High‑Output Grow Light Bulbs
£20.00 incl. Vat
Powerplant Metal Halide Lamps (400W & 600W) are high‑performance grow light bulbs designed to deliver superior blue spectrum output for strong vegetative growth in indoor horticulture and hydroponic systems. Ideal for early growth stages, these lamps offer stable light output, excellent lumen maintenance, and robust performance.
- ✔ Metal halide (MH) grow light bulbs
- ✔ Available in 400W and 600W versions
- ✔ Strong blue spectrum for vegetative growth
- ✔ Standard E40 cap for easy installation
- ✔ Ideal for grow tents & indoor grow rooms
-42%
LUMii AeroTube 6″ Reflector | Heavy Duty Grow Light Reflector
Original price was: £60.00.£35.00Current price is: £35.00. incl. Vat
The LUMii AeroTube 6″ Reflector is a robust and efficient grow light reflector designed to enhance light distribution and intensity from HID and LED grow lamps. With its durable construction, precise internal geometry and easy installation, it helps maximise usable light output and coverage across the canopy — ideal for medium to large grow tents and rooms.
- ✔ High‑efficiency 6″ reflector for grow lights
- ✔ Improves light distribution and canopy coverage
- ✔ Compatible with HID and LED lamps
- ✔ Durable construction for long‑lasting performance
- ✔ Easy setup with standard lamp sockets
- ✔ Ideal for tents, rooms and propagation areas
-32%
LUMii Black Electronic Ballast UK | Dimmable Digital Grow Light Ballast
Original price was: £49.99.£33.99Current price is: £33.99. incl. Vat
The LUMii Black Electronic Ballast is a high-performance dimmable digital grow light ballast designed for HPS and MH grow lamps. Featuring silent operation, soft-start technology, and multiple wattage settings including Super Lumen boost mode, this reliable electronic ballast delivers efficient and stable power for indoor grow rooms and hydroponic systems.
- ✔ Compatible with HPS & MH grow lamps
- ✔ Dimmable wattage control with Super Lumen mode
- ✔ Silent low-noise electronic operation
- ✔ Soft-start technology protects lamps
- ✔ Ideal for grow rooms & hydroponics
Sylvania Grolux High Pressure Sodium 600W 400V Lamp UK | Powerful Grow Light Bulb
£39.00 incl. Vat
The Sylvania Grolux High Pressure Sodium 600W 400V Lamp is a high‑output horticultural lighting solution optimised for indoor grow rooms and hydroponic environments. With patented arc tube technology and elevated PAR output, it delivers strong performance throughout your plant’s lifecycle.
- ✔ High pressure sodium (HPS) horticultural lamp
- ✔ 600W power for strong PAR and lumen output
- ✔ Patented arc tube for exceptional photosynthetic efficiency
- ✔ Ideal for flowering and general plant growth
- ✔ Compatible with standard 400V HPS ballasts
-25%
12‑Way Lighting Board with Timer | Heavy Duty Grow Room Power Distribution
Original price was: £99.50.£75.00Current price is: £75.00. incl. Vat
The 12‑Way Lighting Board with Timer is a robust power distribution and scheduling system designed for grow rooms, propagation tents and indoor horticulture setups. With 12 individually switched outlets and a central mechanical 24‑hour timer, it simplifies automated control of lights, fans, pumps and other equipment — all from one heavy‑duty unit.
- ✔ 12‑way heavy‑duty lighting and power board
- ✔ Mechanical 24‑hour timer included
- ✔ Individually switched outlets for versatile control
- ✔ Ideal for grow lights, fans, pumps and accessories
- ✔ Easy to set up and use — set then forget cycling
- ✔ Perfect for grow rooms, propagation tents and hydro setups
-29%
16-Way Lighting Board with Timer
Original price was: £134.50.£95.00Current price is: £95.00. incl. Vat
The 16-Way Lighting Board with Timer is a centralised grow room power board designed to simplify daily control of lighting, fans, pumps and other essential equipment using one rugged unit with a built-in 24-hour timer.
- ✔ 16 switched mains sockets for organised power distribution
- ✔ Integrated 24-hour mechanical timer for repeat daily scheduling
- ✔ Individually switched outlets for flexible manual control
- ✔ Ideal for grow lights, extraction fans, air pumps and water pumps
- ✔ Simple dial timer with no complicated programming required
- ✔ Compatible with standard UK mains sockets and equipment
-10%
Sunmaster Dual Spectrum Bulbs UK | HPS & MH Grow Light Replacement Lamps
Original price was: £20.00.£18.00Current price is: £18.00. incl. Vat
Sunmaster Dual Spectrum Bulbs are high‑performance grow light replacement lamps combining HPS and MH spectral output to support both vegetative growth and flowering stages. Designed for indoor grow rooms and hydroponic setups, these lamps deliver strong PAR performance, balanced spectrum, and efficient plant development across the full growth cycle.
- ✔ Dual spectrum HPS & MH grow light bulbs
- ✔ Increased PAR for better plant response
- ✔ Suitable for both vegetative and flowering stages
- ✔ Available in multiple wattages
- ✔ Ideal for indoor grow rooms and hydroponic gardens
-33%
Rope Ratchet Hangers | Heavy Duty Adjustable Grow Light Hangers
Original price was: £9.00.£6.00Current price is: £6.00. incl. Vat
Rope Ratchet Hangers are a simple, strong and adjustable hanging solution for grow lights, reflectors, carbon filters and other indoor grow room equipment. Supplied as a pack of two, each hanger supports up to 34kg, making them ideal for safely positioning heavy equipment at the correct height inside grow tents and hydroponic grow rooms.
- ✔ Heavy duty adjustable rope ratchet hangers
- ✔ Ideal for grow lights, reflectors and carbon filters
- ✔ 34kg load capacity per hanger
- ✔ Supplied as a pack of 2 hangers
- ✔ Easy height adjustment for grow room equipment
- ✔ Perfect for grow tents and hydroponic setups
Steel Jack Chain 10m Box | Heavy Duty Grow Room Hanging Chain
£10.00 incl. Vat
Steel Jack Chain is a strong and practical hanging solution for grow rooms, grow tents and indoor horticulture setups. Supplied in a 10m box, it is ideal for hanging grow lights, reflectors, carbon filters, fans and other suitable equipment where a durable steel chain is needed.
- ✔ Strong steel jack chain for grow room equipment
- ✔ Supplied as a 10m box
- ✔ Ideal for hanging grow lights, filters and reflectors
- ✔ Useful for grow tents, grow rooms and hydroponic setups
- ✔ Easy to cut to length for custom hanging setups
- ✔ Durable alternative to standard hanging cord or wire
What Are Grow Lights?
Grow lights are specially designed lighting systems that provide plants with the full spectrum of light required for photosynthesis. Unlike standard household lighting, grow lights deliver specific wavelengths that support plant growth from seedling through to flowering.
Modern LED grow lights are designed to replicate natural sunlight, making them ideal for indoor growing where natural light is limited or unavailable.
Types of Grow Lights
There are several types of grow lights available, each suited to different growing needs:
- LED Grow Lights – Energy-efficient, low heat output and full-spectrum lighting
- HPS Grow Lights – High-intensity lights traditionally used during flowering stages
- CFL Grow Lights – Ideal for smaller setups and propagation
LED grow lights are now the most popular choice for indoor growers due to their efficiency, lifespan and ability to support all stages of plant growth.
Why LED Grow Lights Are the Best Choice
LED grow lights offer several advantages for indoor growing:
- Full-spectrum light for all growth stages
- Lower energy consumption compared to traditional lighting
- Reduced heat output, making temperature control easier
- Long lifespan and consistent performance
When combined with proper ventilation systems, LED grow lights help create a stable and productive growing environment.
How to Choose the Right Grow Light
Choosing the right grow light depends on several key factors:
- The size of your grow space or tent
- The type of plants you are growing
- The stage of plant growth
- Your budget and energy efficiency goals
Smaller setups can use compact LED grow lights, while larger grow rooms may require higher wattage systems for full coverage. If you’re unsure where to start, a complete grow kit can be a great option, as it includes lighting alongside other essential equipment.
Grow Lights and Indoor Growing Setups
Grow lights are a core component of any indoor growing setup and are typically used alongside other equipment to create a controlled environment.
For best results, combine your lighting system with:
- A grow tent to control light and space
- Fans and carbon filters to manage airflow and temperature
- High-quality nutrients and growing media
This combination ensures your plants receive everything they need for optimal growth and maximum yields.
Learn More About Grow Lights
If you’re new to indoor growing or want to improve your setup, check out our helpful guides:
- Grow Tent Setup – How to Set Up a Full Grow Room
- Beginner’s Guide to Setting Up an Indoor Garden
- Coco Coir Grow Guide
These guides will help you understand how lighting fits into a complete indoor growing system.
Shop Grow Lights in the UK
At Acorn Horticulture, we stock a wide range of grow lights for indoor plants, including LED grow lights, propagation lighting and full grow room solutions.
Browse our full range above to find the perfect grow light for your setup and take your indoor growing to the next level.
FAQs
What is the best grow light for indoor plants?
LED grow lights are generally the best option due to their energy efficiency, full-spectrum output and low heat.
How many hours should grow lights be on?
Most plants require between 12–18 hours of light per day depending on their growth stage.
Do grow lights use a lot of electricity?
Modern LED grow lights are energy-efficient and use significantly less electricity than older lighting systems.
Can you grow plants with LED lights?
Yes, LED grow lights are specifically designed to support healthy plant growth indoors by providing the correct light spectrum.
