Top-down view of the Grand Master LEDs Tarantula Tent Ultimate 4x4 LED Grow Light, showing ten evenly spaced LED bars and wiring connections.

Grand Master LEDs Tarantula Tent Ultimate 4x4 V2

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

$800.00 - $800.00

$800.00

$800.00 - $800.00

$800.00

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SAVE BIG! Contact us for Bulk Pricing and Rebate Eligibility, or call us at (973) 206-7590.

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Full Manufacturer’s Warranty

You buy it, we back it! Your purchase is fully covered with a manufacturer’s warranty. More details here.

Designed for real 4x4 tents this LED grow light delivers uniform coverage efficient output and dependable performance growers rely on.

Purpose built to deliver true wall to wall performance in serious 4 by 4 grow tents.

This LED grow light is engineered for growers who are tired of chasing even coverage in a 4 by 4 tent. The Tarantula Tent Ultimate 4x4 V2 delivers a clean full spectrum LED grow light output with tight photon distribution that eliminates hot spots and shadowed corners. With 2098 PPF and a carefully tuned grow light full-spectrum LED design, this LED indoor plant grow light supports strong veg structure and dense flower development in soil or hydro systems.

Is the Tarantula Tent Ultimate 4x4 Energy-Efficient?

Absolutely. Energy-efficient performance sets this grow light LED apart. At 2.76 µmol per joule, this LED grow light for plants produces significantly more usable plant light than HPS systems, averaging 1.3 to 2.1 µmol per joule. That means lower electrical draw, reduced heat load, and better canopy level efficiency without sacrificing output.

Boost Efficiency by Mounting the Driver Outside the Tent

Improve cooling and reduce clutter by placing the driver remotely using the Grand Master LEDs Driver Box Extension. Use one Driver Box Extension (two for dual-driver units) to streamline your setup.

Features

Specifically designed for the best uniform coverage in a 4'x4' grow tent in the world
Full Spectrum
IP66 Waterproof
Knob Dimming
Recommended to be controlled with the Grand Master Controller
May be compatible with other controllers via the RJ14 port (refer to the respective manufacturer’s manual for compatibility details)
5 Year Warranty
Some Assembly required

What's Included?

Grand Master Tarantula Tent Ultimate 4x4 V2 LED Light

Download Resources

Product Manual

Specifications

Max Wattage: 750 watts

Voltage Range: 120 to 277 volt

Flowering Footprint: 4 ft x 4 ft

System PPF Efficacy: 2.76 µmol per joule

Total Light Output: 2,098 PPF

Fixture Dimensions: 44.88 in x 44.88 in

Weight: 37.15 lb

Recommended Mounting Height: 12 to 18 inches above canopy

Certifications: ETL listed, IP66 rated

Spectrum

PPFD

Grow Light Central expert advice for indoor growing equipment

Who should use this LED grow light?

Tent growers running a dedicated 4x4 footprint who want edge to edge uniformity.
Operators pushing intensity who need even PPFD without hot spots or drop off.
Growers working in humid rooms who value IP66 water protection.
Users who want simple knob dimming with optional controller integration.
Anyone upgrading to reliable high efficiency lighting with long term warranty.

Best applications

Full cycle bud production in 4x4 grow tents with flat even canopies.
High intensity flowering using 2.76 umol per joule efficiency to control power costs.
Precision environments needing consistent output across the entire tent.
Controller based rooms using RJ14 compatibility for grouped control.
Growers focused on repeatable yields and uniform plant development.

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.