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The SYLVANIA Grolux 600W bulb stands out as a mixed sodium lamp for indoor growing , optimized for both vegetative growth and flowering with a spectrum enhanced in reds and blues. It emits 90,000 lumens at 2,050K , offering a warm "sunset" effect that stimulates abundant flowering and dense biomass. Ideal for those seeking consistent performance in grow tents and rooms.

This 600W model combines reliability and light output to achieve consistent yields throughout the growing season. The arc discharge design maximizes photonic efficiency, ensuring good canopy penetration and even light distribution across typical growing areas of 1.2–1.5 m² with a suitable reflector.
The lamp operates at 125V and around 5.5A , fits into sodium equipment with an E40 socket and performs well for long campaigns thanks to a useful life of 26,000 hours (it is recommended to renew it between 8-12 months of intensive use to maintain the flow).
With a mixed spectrum that promotes controlled internodes during vegetative growth and flower density during flowering, it stands out as a solid alternative to LED grow lights when the characteristics of classic HPS lamps are preferred. Dimensions: Ø48 × 292 mm . Weight: 152 g .
In everyday use, the phase transition is carried out by adjusting the photoperiod (18/6 for growth and 12/12 for flowering), maintaining ventilation and extraction according to the heat emitted.
To preserve performance, avoid touching the bulb with bare hands and note the installation date to schedule preventative replacement.
All of this helps to convert every watt into grams of well-formed flowers in cannabis cultivation with proper nutrition and climate management.
Designed for grow tents and indoor grow rooms, this lamp offers a spectral curve geared towards vigorous growth and productive flowering in cannabis plants and other photosensitive species. It excels at penetrating dense canopies, performs well in SOG/SCROG setups, and is compatible with open reflectors or cooltubes when temperature control is a priority.
It provides high-intensity light (90,000 lm) at 2,050 K , covering the entire growth cycle: during vegetative growth, it maintains compact structures and healthy leaves; during flowering, it promotes calyx formation, resin production, and flower density. It functions as a direct replacement in E40 sodium kits, making it a preferred option for those who value the intense light output of HPS lights compared to LED grow lights .
Recommendations: Use with appropriate ballast and reflector , maintain adequate extraction, avoid contact of grease/dust with the glass, and verify a secure connection before switching on.
The price-to-performance ratio is one of the biggest advantages of 600W HPS lights. They allow you to set up competitive flowering systems with a more affordable investment compared to other technologies. Check out current offers and packages with ballast and reflector at Hydroponics Blanes .
Available at Hydroponics Blanes , a trusted grow shop and leading grow shop in Spain with discreet 24/48 hour shipping . Extensive catalog of lighting, from HPS to LED grow lights , plus accessories, ballasts, and reflectors to complete your kit. Expert advice to help you choose the right solution for your space.
For those who value a robust and stable lamp, the Grolux 600W Sylvania bulb provides intensity and a mixed spectrum that promotes consistent yields in cannabis cultivation . It offers the warm character typical of sodium lamps, with deep penetration and compact buds, while maintaining classic photoperiod management.
Combined with efficient extraction, balanced nutrition and good environmental control, it becomes a reliable ally inside grow tents and indoor growing rooms.
At Hydroponics Blanes you can expect complete solutions, close advice, discreet shipping and everything you need to install or upgrade lighting, whether with traditional HPS or LED grow lights , always prioritizing performance and garden stability.
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