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Free Shipping on most orders over $175 | Sales Tax in NJ only
Free Shipping on most orders over $175 | Sales Tax in NJ only
Secret Lighting SL 680 Mega LED Grow Light SecretLED

SecretLED Lighting SL-680 Mega LED Grow Light

by SecretLED
$999.00 - $999.00
$999.00
$999.00
$999.00 - $999.00
$999.00

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Energy Rebates & Bulk Pricing Available

SAVE BIG on your grow setup! Email or call us at (973) 206-7590. For rebates eligibility, click here.

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Get an additional 3% off when you pay by ACH, Money, or Zelle. Select your option at check out.

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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.

Secret SL-680 MEGA: The Ultimate LED Grow Light with High-Output Full Spectrum, Onboard Dimming, and Mega Canopy Coverage

Get to Know the Secret Lighting SL-680 Mega LED Grow Light

The Secret Lighting SL - 680 MEGA is a high-efficiency, full-spectrum LED grow light designed for use in open rooms, over benches, or grow tents. The quantum board-style diode array is perfect and ideal for shared lighting scenarios higher above the canopy.

This fixture is named “MEGA” for the power and versatility it provides to your canopy. The Secret Lighting SL - 680 MEGA emits a full spectrum of bright white light with added 660nm red diodes. This spectrum and wattage combination is ideal for a variety of uses. Perfect for use in high-intensity flowering and can also be dimmed between 0% to 100% via the onboard dial for precision light output right on your light fixture.

The Secret Lighting Control (NOT INCLUDED) can be added to one or more Secret Lighting fixtures for even more precise external dimming control. Including On/Off Timing, 0-100% Output, Sunrise/Sunset Programming, and more. The Secret Lighting Control can control up to 250 Secret Lighting fixtures per controller.

Features

  • Designed for use in open rooms, over benches, or grow tents
  • Onboard Dimming
  • External Dimming (Controller NOT INCLUDED)
  • Passively Cooled
  • Plug & Play - contains power & dimming cords, power supply, and mounting hardware

What's Included?

  • 1 x Fixture
  • 2 x Fixture Hooks
  • 1 x SECRET Power Cord (10')
  • 1 x SECRET Control Cable (10')

Download Resources

Spectrum

PAR

Specifications

Operating Voltage: 100-277 VAC

Input Current: 5.66A @ 120V, 2.83A @ 240V, 2.45A @ 277V

Operating Frequency: 50/60 Hz

Photosynthetic Photon Flux (PPF): 2040 µmol/s

Energy Use: 680 Watts (±5%)

PPF/Watt Efficiency: 3.0 µmol/J

Operating Temperature: -4°F to 95°F (-20°C to 35°C)

BTU Output: 2320

Dimensions (in): 36.0 x 35.43 x 1.97

Dimensions (mm): 914.4 x 899.92 x 50.0

Net Weight: 17.0 lbs (7.71 kg)

Warranty: 5-Year Limited

Life Rating: Q90 > 50,000 Hours

Certifications: ETL, CE, DLC Hort

Environment Rating: P65, Wet Rated

Who Should Use This Light?

  • Commercial Growers: Ideal for large-scale open-room or bench setups.
  • Dedicated Home Growers: If you’re looking for professional-grade flowering power, this is an excellent option.
  • Growers Needing Adjustable Light Intensity: Onboard dimming (0-100%) lets you fine-tune light output based on plant stage.

Best Applications

  • Flowering Optimization: Full-spectrum light with 660nm red diodes boosts bud size, density, and resin production.
  • Shared Lighting Setups: Perfect for multi-light arrays in commercial or large-scale grow rooms.
  • Grow Tents & Home Setups: Passively cooled and dimmable for easy management in smaller spaces.

Why Shop with Grow Light Central?

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

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

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

With years of cannabis growing experience, 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.

Why choose SecretLED over other grow light brands?

SecretLED is built with quality in mind-corners cut. Their lights are manufactured in an advanced facility using only premium components to ensure long-lasting performance, reliability, and optimal plant growth.

What makes RS485 signal connections better than 0-10V?

SecretLED utilizes RS485 connections via Cat 6 Ethernet cables, providing superior signal transmission and boosting communication between lights. This results in more stable, efficient, and interference-free performance compared to traditional 0-10V dimming connections.

How does SecretLED ensure true water resistance?

Unlike other brands that only make the light itself water-resistant, SecretLED extends this protection to its connection ports. The twist-lock secure design and protective cap offer superior water resistance compared to standard silicone plugs, keeping your system safe and reliable.

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