250W Spider Starter

• Brand: 4Twenty
• Power: 250 Watt
• Efficiency: 2.7 µmol/J
• Spectrum: Full Spectrum
• Flowering footprint: ≥ 80 × 80 cm
• Dimmable: Yes, 5 settings
• Driver: Internal LED driver
• Protection class: IP65
• Cooling: Passive cooling (100% silent)
• Dimensions: 58 × 40 × 4 cm
• Application: Growth and flowering
• Model: 420SS-250
• EAN: 7436957550504
• Warranty: 2 years

Downloads

📄 Specification sheet 420 Spider Starter 250W (PDF)

The 250W Spider Starter from 4Twenty [420] is designed for growers looking for a compact, energy-efficient, and user-friendly LED grow light. Thanks to its full-spectrum light, the lamp can be used throughout the entire grow cycle, from the first growth phase to harvest. This eliminates the need to switch between different light sources.

With an efficiency of 2.7 µmol/J, the 250W Spider Starter delivers a high light output with relatively low energy consumption. The even light distribution ensures that plants are optimally supported during both the growth and flowering phases.

Suitable for

• Grow tents from 80 × 80 cm
• Growth and flowering phase
• Soil, coco, and hydro systems
• Beginner and experienced growers
• Herbs, vegetables, and other light-loving crops

Recommended settings

Thanks to the 5-step dimming function, the light intensity can be easily adjusted to each growth phase. Start with a lower setting and gradually increase the power as the plants grow.

Seedlings & cuttings

• 40-60% power

Growth phase

• 60-80% power

Flowering phase

• 100% power

Note: if the crop reacts sensitively to the light intensity, temporarily reduce the power.

Simple and reliable

The 250W Spider Starter is designed with ease of use as its starting point. Thanks to the integrated 5-step dimmer, the light intensity can be adjusted to each growth phase. This way, you don't give young plants more light than necessary and you can easily increase the power as the crop grows.

In addition, multiple 420 Spider Starter lamps can be easily connected to each other via the included Daisy Chain cable. This allows multiple lamps to be controlled simultaneously with one dimmer knob. For even more control, the lamp is also compatible with a 0-10V LED Controller.

Passive cooling ensures completely silent operation, while IP65 protection offers extra security in humid growing environments.

Why choose the 250W Spider Starter?

• Full-spectrum light for growth and flowering
• High efficiency of 2.7 µmol/J
• 100% silent thanks to passive cooling
• IP65 protected against moisture and dust
• 5-step dimming function
• Daisy Chain function for connecting multiple lamps
• Compatible with 0-10V LED Controllers
• Suitable for grow tents from 80 × 80 cm
• Compact and energy-efficient design