SYLVANIA Groxpress 600W Bulb

Buy Groxpress 600W light bulb. SYLVANIA

The Groxpress 600W model stands out for combining high light output with a clear, elliptical, tubular bulb design that promotes even light distribution under the reflector. The dominant red spectrum stimulates bud production , mass flowering , and flower fattening in cannabis plants , while maintaining sufficient light in wavelengths that support the green color transitioning from vegetative growth.

The lamp does not contain mercury, which reduces recycling costs and facilitates environmental management.

It works in universal burning position and complies with EN 60662 , allowing it to work at all angles with the accessory open .

With a luminous efficacy of approximately 145 lm/W and a PPF of approximately 950 µmol/s , it integrates seamlessly into 600W HPS kits with E40 sockets, magnetic or electronic ballasts, and open or cooled reflectors. Its lifespan of approximately 24,000 hours facilitates extended lighting seasons, and preventative replacement is recommended after intensive cycles to maintain light output and uniformity.

Ideal for 1.2–1.5 m² grow tents with adequate thermal management, properly sized extraction and a well-adjusted lamp-canopy distance.

In mixed environments with LED grow lights , it provides that warm "punch" that many growers value in the generative phase.

Indoor Growing Bulb Groxpress 600W. SYLVANIA

In indoor cannabis cultivation, this lamp provides sufficient photon density to promote bud formation and flower density. It performs very well in SOG and SCROG setups, with good reach to lower branches when the canopy is properly defoliated. The warm color temperature of approximately 2000 K accelerates aromatic maturation and density, provided ventilation and VPD are within acceptable ranges.

What is the purpose of the SYLVANIA Groxpress 600W light bulb?

It provides intense, warm light during flowering, maximizing the yield and quality of flowers in cannabis plants . Thanks to its dominant red spectrum, it promotes bud formation , bud fattening , and resin production . It can also be used during the transition from vegetative growth, especially in spaces previously equipped with blue LEDs or MH lighting.

Indoor growing tool: Groxpress 600W bulb. SYLVANIA

• Type : Mixed HPS, geared towards flowering.
• Visible flux : ≈ 90,000 lm .
• Color temperature : ≈ 2,000 K (red dominance).
• PPF : ≈ 950 µmol/s .
• Luminous efficiency : ≈ 145 lm/W .
• Useful life : ≈ 24,000 h .
• Start-up : fast ≈5 min .
• Bulb : clear elliptical tubular | Position : universal (EN 60662).
• Accessory level : open.
• Composition : mercury-free .
• Use : Growth and Flowering in 600W HPS spaces.

Compatibility: E40 socket, 600W electronic or magnetic ballasts, open reflectors or cooltubes. In hot environments, it is advisable to increase extraction and air circulation.

How do I use the SYLVANIA Groxpress 600W bulb?

1. Turn off the power and let the equipment cool down before handling.
2. Screw the Groxpress 600 W. SYLVANIA bulb into the E40 socket, holding it by the base, without touching the glass.
3. Connect to the 600W ballast and check wiring, protections and grounding.
4. Adjust photoperiod: 18/6 in growth, 12/12 in flowering.
5. Start with a distance of 50–60 cm from the canopy and gradually move closer, monitoring leaf temperature.
6. Maintenance plan: reflector cleaning, monitoring of hours and replacement when a drop in lumens is perceived or after several intensive cycles.

Price of Groxpress 600W light bulb. SYLVANIA

Excellent cost- to -performance ratio for 600W HPS systems. A strategic option for grow rooms seeking stable performance without high investment. Packages with ballast and reflector are available to optimize your budget.

Where can I buy a Groxpress 600W SYLVANIA light bulb online?

Available at Hydroponics Blanes , a trusted grow shop and leading grow shop in Spain with discreet 24/48h shipping . Extensive catalog of lighting: HPS, CMH, and LED grow lights , plus accessories to complete your kit. Technical advice available for adjusting reflectors, ventilation, and cycle planning.

Those seeking a warm boost during the generative phase will find the Groxpress 600 W SYLVANIA bulb an ally for compact and aromatic harvests.

It is a solid alternative when looking for that classic HPS character in cannabis cultivation , combinable with LED grow lights in HPS+LED hybrids that improve coverage and overall efficiency of the set.

At Hydroponics Blanes you can expect complete solutions for indoor growing , personalized attention and discreet shipping throughout the peninsula.