HLG 750 Diablo Full Spectrum LED Grow Light

The HLG 750 Diablo Full Spectrum LED Grow Light is a high-output fixture built for full-cycle indoor cultivation, pairing intense light output with high system efficiency and broad canopy coverage.

Four advanced Diablo Quantum Boards® deliver 2,056 PPF at 2.88 µmol/J while drawing up to 715 watts. Integrated reflectors direct photons toward the canopy for better light distribution, and the plant-centric full spectrum white plus deep red output supports both vegetative and flowering growth.

• Output: 2,056 PPF
• Efficacy: 2.88 µmol/J
• Coverage: 5’ x 5’ Flower / 6’ x 6’ Veg
• Power: 0–715W Dimmable

HLG rates the 750 Diablo for a 5’ x 5’ flowering footprint and up to a 6’ x 6’ vegetative footprint.

Four Diablo Quantum Boards®

The HLG 750 Diablo uses four advanced Diablo Quantum Boards® arranged across its large-format fixture.

This multi-board design spreads output across a broad growing area, making the fixture well suited to grow tents, flood tables, rolling benches and other indoor setups that need high-intensity canopy coverage.

2,056 PPF Output

With a total output of 2,056 µmol/s PPF, the HLG 750 Diablo delivers more than 2,000 micromoles of photosynthetically active photons every second.

This high-output design provides the intensity demanding indoor cultivation requires while maintaining efficient electrical performance.

2.88 µmol/J System Efficacy

The HLG 750 Diablo achieves a system efficacy of 2.88 µmol/J.

That combination of high photon output and efficient operation delivers substantial usable light at a maximum power draw of 715 watts.

Full Spectrum White + Deep Red

The 750 Diablo uses a plant-centric full spectrum white output enhanced with deep red.

The spectrum is designed for full-cycle cultivation, so the same fixture supports plants through both vegetative and flowering stages without changing lights.

Integrated Reflectors

Integrated reflectors positioned around the Diablo Quantum Boards® improve photon delivery toward the growing area.

The reflector system helps improve PPFD distribution throughout the canopy, including light delivery to lower canopy levels.

5’ x 5’ Flowering Coverage

HLG rates the 750 Diablo for a 5’ x 5’ flowering footprint at a recommended canopy distance of approximately 15”–24”.

This provides a substantial high-intensity footprint from a single fixture.

6’ x 6’ Vegetative Coverage

For vegetative growth, HLG rates the fixture for up to a 6’ x 6’ footprint at approximately 36” above the canopy.

The dimmable output also lets intensity be reduced when full flowering power is not required.

0–715W Dimmable Output

The HLG 750 Diablo operates from 0 to 715 watts, letting growers adjust output for different growth stages and lighting requirements.

A dimmable power supply is included, giving the fixture more flexibility than a fixed-output grow light.

RJ 0–10V + Manual Dimming

The standard control configuration supports RJ 0–10V dimming with a manual adjustment knob.

This gives direct fixture-level control over output without a separate lighting control system.

GrowFlux Wireless Control Option

The HLG 750 Diablo is also available with GrowFlux wireless dimming compatibility.

When configured with the GrowFlux module and the required GrowFlux Access Point, fixtures can join a wireless lighting control network for remote control, scheduling and monitoring.

RJ 0–10V vs. GrowFlux: Choosing a Dimming Option

RJ 0–10V with Manual Knob — the standard configuration, offering hands-on output adjustment at the fixture and compatibility with wired 0–10V controllers.

GrowFlux — adds wireless dimming compatibility for remote control, scheduling and monitoring across a GrowFlux network (GrowFlux Access Point required).

120–277V Input

The HLG 750 Diablo supports an input voltage range of 120–277VAC, 50/60Hz.

This wide range suits both standard indoor growing environments and larger commercial electrical installations.

Passive-Cooled Design

The fixture uses a passive-cooled design, eliminating the need for integrated cooling fans.

This simplifies the fixture and lets heat from the LEDs and electronics dissipate without active fan cooling or moving parts.

Compact High-Output Fixture

Despite its output, the HLG 750 Diablo measures only 37.5” x 27.125” x 3.75”.

The complete fixture weighs approximately 20.25 lb, delivering more than 2,000 PPF from a relatively low-profile suspended fixture.

What’s Included

• HLG 750 Diablo Full Spectrum LED Grow Light
• Dimmable Power Supply
• Hanging Hardware
• Rope Ratchets
• Power Cord