Grand Master LEDs Tarantula Greenhouse 500

Q: How many watts do I need for my grow space?

The wattage depends on the size of your grow tent or room. A general guideline is 30-50 watts per square foot for high-light plants like cannabis. For example, a 2x2 ft area may need 100-200W, while a 4x4 ft area may require 400-600W for optimal coverage.

Q: What is the difference between full-spectrum and red/blue LED grow lights?

Full-spectrum LED lights mimic natural sunlight, providing a balanced mix of blue (for vegetative growth) and red (for flowering and fruiting) light. Red/blue LED lights focus on specific wavelengths but may not support plants as effectively as full-spectrum lights.

by Grand Master LEDs

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$630.00 - $695.00

$630.00

$630.00 - $695.00

$630.00

Use code GM5 for 5% off GML orders over $1,000.

MADE TO ORDER. NOT A STOCK ITEM.

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A high efficiency greenhouse LED grow light available in full or red spectrum delivering powerful output reduced energy costs and long term reliability.

Drive consistent greenhouse yields with the Tarantula Greenhouse 500 engineered for serious cultivators demanding power, precision, and proven performance.

GML Mobile App Coming Soon: Grand Master LEDs is developing a mobile app for controller connectivity, giving growers more convenient control from their phone. Stay tuned!

The Grand Master LEDs Tarantula Greenhouse 500 is built for commercial greenhouse production, where durability, efficiency, and light quality are paramount. Featuring OSRAM diodes paired with an Inventronics driver, this IP66-rated fixture delivers up to 3.55 µmol/J efficiency and 1,775 PPF in the red-spectrum version. Both Red and Full Spectrum options ensure optimal light balance for different growth phases, all while maintaining uniform PPFD coverage across a 4' x 4' canopy.

Is the Tarantula Greenhouse 500 energy-efficient?

Absolutely. With up to 3.55 µmol/J efficacy, this fixture delivers more than twice the usable light output of standard 1000W HPS fixtures (typically 1.7 µmol/J). Drawing just 500W, it delivers intense PAR output with minimal heat load, reducing cooling costs and improving energy efficiency. The IP66 waterproof housing and DLC certification ensure it performs flawlessly in humid greenhouse environments for years to come.

Features

Designed for Commercial production in greenhouse
IP66 Waterproof
Features OSRAM diodes
Dimmable
Compatible with all controllers through RJ14 port
Inventronics Driver

What's Included?

Grand Master Tarantula Greenhouse 500 LED Light
Hooks & Hanger Accessories

Download Resources

Product Manual

Specifications

Red Spectrum Specifications

Max Wattage: 500W (240V)

Voltage Range: 120–277V and 480V available

Flowering Footprint: 4' x 4'

System PPF Efficacy: 3.55 µmol/J

Total Output: 1,775 PPF

Dimensions: 30.87" x 3.54" x 2.76"

Weight: 6.72 lbs

Recommended Mounting Height: High Bay

Certifications: ETL Listed, IP66, DLC

Full Spectrum Specifications

Max Wattage: 500W (240V)

Voltage Range: 120–277V and 480V available

Flowering Footprint: 4' x 4'

System PPF Efficacy: 3.12 µmol/J

Total Output: 1,560 PPF

Dimensions: 30.87" x 3.54" x 2.76"

Weight: 6.72 lbs

Recommended Mounting Height: High Bay

Certifications: ETL Listed, IP66, DLC

Full Spectrum

Red Spectrum

Grow Light Central expert advice for indoor growing equipment

Who should use this full spectrum LED grow light?

Commercial greenhouse growers seeking efficient, high-intensity lighting for 4x4 coverage
Operators who want precision control through dimming and RJ14-compatible systems
Facilities requiring IP66 waterproof fixtures with DLC and ETL certification

Best applications

Greenhouse flowering zones boosted by red spectrum efficiency up to 3.55 µmol/J
Full cycle grows supported by balanced white spectrum with strong 1,560 PPF output
High bay installations leveraging lightweight design for even canopy coverage
Large-scale operations optimizing long-term performance with Inventronics drivers and 5-year warranty

Why Shop with Grow Light Central?

“There’s a crapload of equipment providers out there. What makes Grow Light Central so special?”

Grow Light Central is a grow equipment solution provider connecting you to 100+ brands and 60+ suppliers trusted and used in the best grow facilities across the country.

Anthony, the owner and operator, personally ensures every order is handled right. No passing you off, no runaround, just the expert service and advice you deserve.

FAQs

How many watts do I need for my grow space?

The wattage depends on the size of your grow tent or room. A general guideline is 30-50 watts per square foot for high-light plants like cannabis. For example, a 2x2 ft area may need 100-200W, while a 4x4 ft area may require 400-600W for optimal coverage.

What is the difference between full-spectrum and red/blue LED grow lights?

Full-spectrum LED lights mimic natural sunlight, providing a balanced mix of blue (for vegetative growth) and red (for flowering and fruiting) light. Red/blue LED lights focus on specific wavelengths but may not support plants as effectively as full-spectrum lights.