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Green Force 400W bulb. SOLUX mixed spectrum for indoor growing . HPS lamp with 400W , 59,000 lumens , 2,100K and E40 base, designed for growth and flowering stages in cannabis cultivation projects with efficient thermal control.

The Green Force 400W SOLUX bulb is designed as a stable main light source for medium-sized grow rooms and tents. Its mixed spectrum combines a blue/white component, useful during the vegetative stage, with a red/orange band geared towards flowering, eliminating the need to switch lamps between phases and providing uniformity in the canopy.
With 59,000 lm and a color temperature of 2,100 K , this HPS delivers adequate intensity to promote compact flower formation and solid plant structure.
It works with magnetic and electronic ballasts , offering reliable ignition and photometric stability when there is proper ventilation, reflector cleaning and well-defined photoperiod schedules.
The E40 socket facilitates integration into commercial reflectors; in addition, the 400W format helps to balance performance and heat management in medium-sized grow tents.
The approximate lifespan of 32,000 hours allows for planning a maintenance schedule, although it is advisable to record the installation date and schedule a replacement after 9 months of intensive use, since the depreciation of the luminous flux impacts production even when the eye does not perceive it clearly.
In hybrid configurations, it acts in synergy with LED grow lights as a side booster, improving PPFD uniformity and penetration into the mid-levels of the cannabis plant canopy.
In indoor growing scenarios, 400W represents a sweet spot between energy consumption and light intensity. The mixed spectrum allows for starting seedlings, consolidating the vegetative stage, and transitioning to flowering without light replacements, maintaining continuous operation. With suitable reflectors and good ventilation, it's possible to cover medium-sized areas uniformly, minimizing shade and sustaining consistent growth and flowering rates.
As a lighting tool, this HPS stands out for:
A cost-competitive option with a good performance/power consumption ratio for medium-sized cabinets. The investment pays for itself through spectrum continuity, ease of integration, and consistent results when thermal management and regular cleaning are in place.
Available at Hydroponics Blanes , a trusted grow shop in Spain with discreet shipping . Our specialized catalog features HPS, MH, and LED grow lights , environmental control, irrigation, and substrates, designed to optimize indoor cannabis cultivation projects.
Key technical specifications : Type: Sodium (HPS) | Power: 400W | Color temperature: 2,100 K | Lumens: 59,000 | Lifespan: ≈ 32,000 hours | Base: E40 | Period: Growth and flowering | Compatible with magnetic and electronic ballasts .
Those seeking a balance between intensity and thermal control will find in the Green Force 400W SOLUX bulb a versatile ally for complete indoor growing cycles.
Solid performance, easy assembly, and compatibility with LED grow lights for fine-tuning canopy uniformity. Available at Hydroponics Blanes with discreet shipping and expert advice from a trusted grow shop .