Orders over $499
Hard-to-find varieties
Only the best for your grow
Treegers GL420W LED
The Treegers GL420W LED Grow Light combines cutting-edge efficiency with compact design, delivering professional-grade performance for smaller grow areas. With an impressive fixture efficacy of 2.8 µmol/J and a PPF output of 1155 µmol/s, this fixture produces intense, uniform light ideal for a 1.0 × 1.0 m to 1.2 × 1.2 m cultivation zone. Its Full-Spectrum Fusion output promotes strong vegetative growth and abundant flowering, ensuring balanced development across the entire growth cycle.
Built for longevity, the GL420W features passive cooling for silent, maintenance-free operation and an IP66 rating for full dust and water protection. The slimline six-bar configuration enhances canopy penetration while maintaining excellent thermal management. Compatible with Treegers Precise T Dimmer and Growcast controller, it allows full 0–100% dimming control for precise environmental tuning. Reliable, efficient, and easy to install, the GL420W delivers exceptional value for professional and hobby growers alike.

High-Performance Efficiency
Delivers 1155 µmol/s at 2.8 µmol/J for optimal growth and energy savings
Full-Spectrum Fusion
Balanced light output for complete vegetative and flowering development
Compact & Durable
Design IP66-rated protection with passive cooling for long, silent operationA compact, efficient, and powerful LED fixture designed for consistent results and long-term reliability in any grow space.
Sold out
Free delivery —
on all orders over
$499!
Verified by Hydro Oasis
Secure checkout
with

Treegers GL420W LED
Key Highlights
expand_more
Key Highlights
- Generates 1155 µmol/s with 2.8 µmol/J fixture efficacy
- Full-Spectrum Fusion for all growth stages
- Compact six-bar layout for even canopy coverage
- Passive cooling ensures silent, low-maintenance operation
- IP66 dust and water-resistant construction
- Dimmable 0–100% with Precise T Dimmer or Growcast
- Compatible with any 0–10V universal controller
- Certified CE, UKCA, RCM, RoHS, and SAA compliant
Directions for Use
expand_more
Directions for Use
- Mount the GL420W securely using the supplied hanging kit.
- Connect to Treegers Precise T Dimmer or compatible 0–10V controller.
- Position 30–60 cm above the canopy depending on plant stage and light intensity requirements.
- Adjust dimming from 0–100% for vegetative or flowering phases.
- Maintain airflow around the fixture for optimal passive cooling.
- Clean LED bars periodically with a soft, dry cloth to preserve light output.
Technical Specifications
expand_more
Technical Specifications
- Product Code: TGL0002
- EAN/GTIN: 9309001188047
- Power Consumption: 420W ±5%
- Light Output (PPF): 1155 µmol/s
- Fixture Efficacy: 2.8 µmol/J
- Diodes Efficacy: Up to 4.2 µmol/J
- Coverage Area: Minimum 1.0 × 1.0 m / Maximum 1.2 × 1.2 m
- Thermal Management: Passive Cooling
- Input Voltage: 120–277V, 40/50 Hz
- Ingress Protection: IP66
- LED Bars Lifetime: +60,000 Hrs
- Dimming: 0–100% (Treegers Precise T Dimmer 0–10V)
- External Control: Treegers Growcast or any Universal Controller
- Light Distribution: 120°
- Fixture Dimensions: 680 × 700 × 42 mm
- Fixture Weight: 5.08 kg
- Carton Dimensions: 755 × 97 × 735 mm
- Gross Weight: 6.68 kg
- Certifications: CE, UKCA, RCM, RoHS, SAA
- Warranty: 3 Years
- Spectrum: Full-Spectrum Fusion
Resources
expand_more
Resources
- Treegers GL420W LED User Guide
- Treegers Grow Light Tactics
- Treegers GL420W LED Fixture Performance Data Sheet - 2025
- Treegers GL300W, GL420W, GL650W+, & GL1000W+ LED Fixtures IP66 Test Report
- Treegers GL300W, GL420W, GL650W+, & GL1000W+ LED Fixtures RoHS Certificate
- Treegers GL300W & GL420W LED Fixtures EMC Certificate
- Treegers GL300W & GL420W LED Fixtures UKCA-EMC Certificate
- Treegers GL300W & GL420W LED Fixtures LVD Certificate
- Treegers GL300W & GL420W LED Fixtures UKCA-LVD Certificate
- Treegers GL300W & GL420W LED Fixtures SAA Certificate
Shipping & Returns
expand_more
Shipping & Returns
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
To start a return, you can contact us at info@hydrooasis.com.au
If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
You can always contact us for any return question at info@hydrooasis.com.au.
Size: 420W