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SECRET SL-680 MEGA LED grow light with a purple frame and many yellow and red LEDs, seen from below.
SECRET SL-680 MEGA LED grow light panel with a purple frame and a dense array of yellow LED diodes.
SECRET SL-680 MEGA LED grow light with silver reflective panels, purple frame, and central driver.
SECRET SL-680 MEGA LED grow light with a purple frame and many yellow and red LEDs, seen from below.
SECRET SL-680 MEGA LED grow light panel with a purple frame and a dense array of yellow LED diodes.
SECRET SL-680 MEGA LED grow light with silver reflective panels, purple frame, and central driver.

Secret Lighting LED SL-680 MEGA LED Grow Light

Official Secret Lighting LED Dealer Model: SL - 680 MEGA - 120V
$999.00 USD$799.00 USD$999.00 USD
 $999.00 USD
starting from 0% interest financing from /mo.

Payment Options

Options:Pay in Four, Pay Monthly
Amount:Up to $1,500 (Pay in 4)
Up to $10,000 (Monthly)
Schedule:Bi-weekly to Monthly
Term:6 weeks, 12 or 24 months
Interest:0% to 35.99% APR*
Credit Check?Soft Check Only
Schedule:Bi-weekly to Monthly
Term:6 weeks, 6 or 12 months
Interest:0% to 35.99% APR*
Credit Check?Soft Check Only
Finance up to:$4,000
Must apply on a desktop device.
Schedule:Flexible
Term:Up to 36 months
Interest:Processing fee + interest
Lease-to-Own?Yes
Amount:$500 to $10,000
Looking to finance equipment under your corporation? Learn more about Business Financing
  • Delivers 3.0 μmol/J efficiency to maximize biomass production while keeping energy overhead to a minimum.
  • Full spectrum diodes are mixed with 660nm deep red to trigger stronger flowering responses in heavy canopies.
  • Voltage options include 120V, 240V, and 277V to accommodate both home outlets and commercial power grids.
  • 5-year limited warranty
  • View More Details
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VOLUME PRICING

Commercial & Bulk Purchasing

We support operations & licensed facilities with volume pricing, dedicated account managers, and custom equipment consultation.

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THROUGH THE Cultivator's LENS Hands-On Evaluation

Who This Is For

  • You are upgrading your light because your current fixture lacks the red diodes needed to bulk up a maturing canopy.
  • You are moving to a multi-light setup because managing individual timers for every bar light is a massive headache.

What We Found

  • The onboard dimmer dial feels solid and lacks the sensitive dead zones we see on cheaper 600W bar lights.
  • We suggest this for 4x4 setups because the light spread hits the corners without creating a massive hot spot.

What Users Say

  • Users who moved from HPS say they stopped fighting heat spikes and saw a noticeable drop in their cooling costs.
  • Operators running multi-light rooms say the daisy-chain control saved them hours of manual intensity tuning.

Secret Lighting LED SL-680 MEGA LED Grow Light

Secret Lighting LED SL-680 MEGA LED Grow Light Topdown view

Struggling with inconsistent yields and high energy costs? The Secret Lighting SL-680 MEGA LED Grow Light is designed for growers who demand professional-grade power and peak efficiency in a versatile package. Whether you are growing in a specialized tent, on greenhouse benches, or in a dedicated grow room, the "MEGA" provides the intense, high-quality light needed to push your plants to their full genetic potential.

This fixture delivers a brilliant, full-spectrum white light optimized with additional 660nm red diodes to trigger robust photosynthesis and high-intensity flowering. For those looking to manage larger canopies, the SL-680 MEGA bridges the gap between smaller hobby lights and massive commercial units like the Secret Lighting LED SL-1000 LED Grow Light. With its industry-leading 3.0 μmol/J efficiency, you can maximize your output while keeping operational overhead to a minimum.

Precision control is at your fingertips with onboard dimming from 0 to 100 percent, or you can integrate the fixture into a larger system using the Secret Lighting LED Lighting Controller. This allows for advanced scheduling and sunrise/sunset programming for up to 250 fixtures. Explore the complete Secret Lighting collection to find the perfect lighting solution for every stage of your grow.

Features

🌈
Full Spectrum Lighting

Bright white light with 660nm red diodes supports plants from seedling through the flowering stage.

🔆
Onboard Dimming

Easily adjust light intensity from 0–100% for precise control over every growth phase.

⚡
High Efficiency

Leading 3.0 μmol/J efficacy ensures maximum light output with significantly lower energy consumption.

📐
Quantum Board Design

Ideal for single or shared setups, providing consistent, even coverage across your entire canopy.

🔌
Plug-and-Play Setup

Complete with all necessary cords, power supply, and mounting hardware for immediate installation.

🖥️
Scalable Control

Compatible with external controllers for advanced customization, scheduling, and multi-light management.

Specifications

Specification Value
Watts 680
Voltage 100-277V, 50-60Hz
Amperage 120V (5.66A) / 240V (2.83A) / 277V (2.45A)
PPF (Light Output) 2040 µmol/s
PPF/Watt 3.0 µmol/J
BTUs 2320
Operating Temp -4 to 95°F
Lifetime 50,000 hours
Mounting Height 6–36″ (152–914mm)
Certifications ETL, DLC, CE, Hort
IP Rating IP65
Dimensions 36″ x 35.43″ x 1.97″ (914 x 900 x 50mm)
Weight 17.0 lbs
Warranty 5 Years

Warranty

Secret Lighting LLC offers a 5-Year Limited Warranty on the SL-680 MEGA LED Grow Light.

FAQs

What is the recommended coverage area for the SL-680 MEGA?+

The SL-680 MEGA provides an optimal vegetative footprint of 5' x 5' and a flowering footprint of 4' x 4'.

Is this light suitable for humid grow environments?+

Yes, the fixture is IP65 wet-rated, making it durable and safe for use in humid or wet environments.

Can I control multiple SL-680 units at once?+

Absolutely. While it has onboard dimming, it is also compatible with the Secret Lighting Control system, which can manage up to 250 fixtures simultaneously.

What makes the "MEGA" spectrum different?+

It uses a high-quality full-spectrum white light base and enhances it with 660nm red diodes, which are specifically targeted to boost flower production and density.

Does it come with mounting hardware?+

Yes, the SL-680 MEGA is a plug-and-play system that includes all necessary power cords and mounting hardware for a quick setup.

Happy To Help

Questions About This Product?

Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)

Call (360) 800-5535

Why Trimleaf

Equipping home growers, craft producers, and commercial operations across North America since 2016.

10+
Years of Specialist Knowledge
4.8★
Over 1,900 Verified Reviews
50,000+
Growers Served
120+
Top Equipment Brands in Stock

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