MAXIBRIGHT Daylight 660W PRO LED – High Output Bar LED Grow Light for 1.5m x 1.5m Tents

Maxibright Daylight 660W PRO LED is a flagship 660W bar LED grow light built for growers who want serious output, uniform canopy coverage and proper value for money. Designed for 1.5m x 1.5m grow tents and rooms, it combines a high-output 6-bar layout with full spectrum performance, passive cooling and controller compatibility in one streamlined fixture.

With a PPF of 1782 µmol/s and 2.7 µmol/J fixture efficiency, the Daylight 660W PRO gives you the intensity needed for aggressive growth and heavy flowering, while staying cooler and more efficient than traditional HID lighting.

Please note: This item is purchased to order, so delivery or local collection may take slightly longer than usual.

Key Benefits

• High output performance; delivers 1782 µmol/s PPF for strong growth and flowering
• Uniform canopy coverage; 6-bar design spreads light evenly across 1.5m x 1.5m spaces
• Full spectrum with added red; supports the full grow cycle with enhanced flowering performance
• Dimmable out of the box; remote dimmer gives 25%, 50%, 75% and 100% output control
• Controller linkable; manage multiple fixtures from a single compatible controller via iLink
• Cool running and silent; passive cooling with no fans or moving parts
• Osram and LUMLED diodes; efficient, proven components for reliable output
• IP65 protection; better suited to humid grow room environments
• Easy one-person assembly; clip-on bars and plug-and-play setup keep installation straightforward

Why You Need It

If you are lighting a 1.5m x 1.5m space properly, coverage matters just as much as raw power. Compact fixtures and lens-led designs can leave you with hotspots directly under the light and weaker intensity around the edges.

The Daylight 660W PRO solves that with a wide 6-bar layout that physically spreads the diodes across the canopy. That gives you more even PPFD, better plant-to-plant consistency and improved use of your full grow area.

It is also a smart upgrade path from a 600W HPS. You get more usable light, lower excess heat and quieter operation, without stepping into the price bracket of some premium commercial fixtures.

How to Set Up

• Assemble the fixture using the clip-on LED bars
• Hang centrally over the canopy using the included heavy-duty hanging brackets or rope ratchets
• Start at a lower dimmer setting for young plants or freshly rooted cuttings
• Increase intensity gradually through veg and into flower
• Use the included remote dimmer for 25%, 50%, 75% or 100% output
• Link multiple fixtures to a compatible controller if you want centralised control

Why the Bar Design Works

Instead of concentrating all the light into one tight central point, the Daylight 660W PRO uses 6 LED bars to spread output across the entire footprint. That means more of your plants sit directly under a light source, helping reduce hotspots, improve edge performance and create a more uniform canopy.

Because the light is distributed across the fixture rather than pushed outward from a small centre, you also lose less usable light to walls and tent sides.

Full Spectrum Performance

This fixture uses a full spectrum white light with added red, giving you a balanced output for propagation, veg and flowering. The added red helps drive stronger bloom performance, while the broad white spectrum supports healthy full-cycle growth.

Built with LUMLED white diodes and Osram red diodes, it is designed to deliver both intensity and spectral quality without overcomplicating the setup.

Passive Cooling

The Daylight 660W PRO uses passive heatsink cooling, so there are no internal fans, no added noise and fewer moving parts to fail. That keeps the fixture silent, lowers maintenance and improves long-term reliability.

Watch: 4 Must-Do’s for Bar LEDs

Tech Specs

• Power: 660W
• PPF: 1782 µmol/s
• Fixture efficiency: 2.7 µmol/J
• LED power efficiency: 2.84 µmol/J
• Average LED efficiency: 3.15 µmol/J
• White diode efficiency: 2.85 µmol/J
• Red diode efficiency: 3.8 µmol/J
• Coverage: 1.5m x 1.5m
• Light source: Osram and LUMLED LEDs
• Dimming: 25% / 50% / 75% / 100%
• IP rating: IP65
• Supply voltage: 120–277V
• Supply frequency: 50/60Hz
• Input current: 3.25A
• Dimensions: 112cm x 107cm x 7.1cm
• Net weight: 8.8kg
• Gross weight: 11.2kg
• Light angle: 120°
• Working temperature: 0°C to 40°C
• Lifespan: 50,000+ hours

Top Tip

If you are moving from HPS to a high-output bar LED, start slightly higher above the canopy or on a lower dimmer setting, then increase intensity as plants adapt. You will usually get better results from easing plants into the extra usable light rather than hitting them with full power straight away.