Spider Farmer SF1000 LED Grow Light
The step-up 100 W quantum-board grow light: premium diodes and driver, 40-100% dimming and silent fanless cooling for a 60 x 60 cm space.
4.3 / 5
★★★★★ ★★★★★ Highly recommended
Strengths
- Premium component pairing - Samsung diodes and a Mean Well driver - rare at entry wattage
- Measured efficacy around 2.45 umol/J beats most 100 W rivals, trimming running cost per unit of light
- 40-100% dimmer makes one light usable from germination through fruiting
Watch outs
- Costs more than other 100 W boards - the premium is the components, not more coverage
- Flowering coverage is still only 60 x 60 cm despite the 3x3 ft veg headline
- Diode spec varies by generation (LM301B, LM301H EVO, Bridgelux), so listings need reading carefully
- Power draw 100 W (+/- 5%); independent testing measured around 96 W
- PPF About 249 umol/s
- Efficacy 2.5 umol/J official; roughly 2.45 umol/J measured
- Coverage 60 x 60 cm (2x2 ft) flowering; up to 90 x 90 cm (3x3 ft) vegetative
By Rob Griffiths1 min read
- Power draw
- 100 W (+/- 5%); independent testing measured around 96 W
- PPF
- About 249 umol/s
- Efficacy
- 2.5 umol/J official; roughly 2.45 umol/J measured
- Coverage
- 60 x 60 cm (2x2 ft) flowering; up to 90 x 90 cm (3x3 ft) vegetative
- Diodes
- Generation-dependent: original Samsung LM301B, EVO version Samsung LM301H EVO (the current Amazon UK listing), 2026 factory version Bridgelux
- Driver
- Mean Well XLG-100-H-AB (external, with dimmer box)
- Dimming
- Knob dimmer, 40-100%, plus on/off switch; daisy-chain support for multiple units
- Spectrum
- Full spectrum: 650-665 nm red, 730-740 nm IR, ~3000 K and ~5000 K white
- Cooling
- Fanless aluminium heatsink - silent
- Dimensions
- 32.5 x 29.0 x 5.9 cm
- Weight
- 1.26 kg
- Rated lifespan
- 55,000 hours
- Warranty
- 5 years, with UK/EU service centres