High-Efficiency Indoor LED Lighting Engineered Around Plant Biology

The Fluence SPYDR 2i is a 47in commercial LED grow light delivering 1700 µmol/s of photosynthetic photon flux at 638W consumption - achieving 2.7 µmol/J efficacy - all within the PhysioSpec Indoor spectrum developed to maximise plant growth under fully controlled-environment conditions. Designed for multi-tier vertical farms, indoor grow rooms, and high-density cultivation facilities, the SPYDR 2i provides uniform canopy coverage and the spectral precision that indoor crops need to reach their full genetic potential without relying on any natural light contribution.

Key Features & Benefits

PhysioSpec Indoor spectrum - Fluence's PhysioSpec Indoor spectral formulation is scientifically developed to support vigorous vegetative growth and robust flowering in fully enclosed environments, providing the specific wavelength ratios that drive photosynthesis and secondary metabolite accumulation.
1700 µmol/s PPF output - Delivers a high photon flux across the 47in fixture footprint, enabling PPFD targets suited to intensive indoor crop production on dense canopy layouts and tiered rack systems.
2.7 µmol/J photon efficacy - Industry-leading efficiency translates directly into lower energy costs per unit of yield, improving the economics of indoor cultivation at commercial scale compared with HID alternatives.
PSU 120-277V AC input - The integrated power supply unit accepts 120-277V AC, making the SPYDR 2i deployable across diverse facility electrical configurations without separate external driver boxes.
Commercial-grade aluminium chassis - The rigid extruded-aluminium body provides effective passive heat management, maintaining consistent LED junction temperatures for long operational life and stable output across extended crop cycles.

Who Should Use This

Professional indoor cultivators, vertical farm operators, and research facilities seeking a high-performance LED solution for fully enclosed grow environments. The SPYDR 2i is particularly well suited to operations transitioning away from HID lighting who want to improve energy efficiency and spectral control without sacrificing yield potential or crop quality.

Compatibility

The SPYDR 2i accepts PSU 120-277V AC input and is compatible with Fluence's dimming and control ecosystem, including the Whisper 2.0 Dimmer and compatible PSE or PSU controller units. Mounting accessories and DC extension cables for the SPYDR 2 series are available separately from Fluence.

Frequently Asked Questions

What is PhysioSpec Indoor and how does it differ from generic white LED spectra?: PhysioSpec Indoor is Fluence's research-backed spectral formulation developed specifically for plants grown without any sunlight contribution. Unlike generic white LED spectra, it is weighted toward the wavelengths most efficiently used by photosynthesis and the secondary metabolite pathways most relevant to indoor crops throughout all growth stages.
Can the SPYDR 2i be dimmed?: Yes - the SPYDR 2i supports dimming when paired with compatible Fluence control hardware such as the Whisper 2.0 Dimmer or PSE/PSU controller, allowing growers to adjust intensity across growth stages or manage heat loads during high-temperature periods.
How does the 47in width affect canopy coverage?: The 47in footprint is optimised to deliver uniform PPFD across a defined canopy area when hung at the recommended mounting height. Fluence provides photon distribution maps to help growers plan fixture spacing for their specific bench or rack dimensions.
Does the integrated PSU eliminate the need for a separate driver?: Yes - the onboard PSU handles power conversion, so there is no external driver unit to mount or wire separately. This simplifies installation and reduces the number of ceiling-space components that need to be managed and maintained.

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Brian Whittemore

Feb 19, 2026

5

So far this is the best lighting I've ever had the pleasure of using I'm at day 45 in vegetation cycle and keep the ppfd at 350/400 no problems in my book these lights are phenomenally fantastic and I'll give a full review at harvest thanks for such good equipment.

Fluence SPYDR 2i LED Grow Light - 47in

High-Efficiency Indoor LED Lighting Engineered Around Plant Biology

Key Features & Benefits

Who Should Use This

Compatibility

Frequently Asked Questions

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