SOLUX MH 400W Bulb

SOLUX MH 400 W bulb.

The SOLUX MH 400W bulb focuses its spectrum on the blue range to accelerate chlorophyll synthesis and strengthen plant structure before the flowering stage. The 6,500K color temperature mimics spring days: vigorous stems, uniform canopies, and orderly branching in grow tents 80–120 cm in diameter.

The E40 base format allows installation with 400W magnetic or electronic ballasts , achieving stable ignition and uniform distribution with open reflectors or cooltube type.

With a lifespan of 8,000 hours , the lamp maintains reliable light output for multiple cycles; it is advisable to record the installation date and schedule a replacement when the light output drops.

This vegetative profile works very well in SOG for fast rooting and in SCROG to easily fill the mesh.

Proper thermal management — properly sized extraction, oscillating ventilation, and well-calibrated lamp-canopy distance — prevents peak stress and maximizes efficiency per watt.

In hybrid environments, the bulb is combined with perimeter LED grow lights that improve lateral coverage without excessively increasing the central heat load. It also excels in maintaining mother plants and during the cloning phase, where the blue light helps maintain manageable heights, compact internodes, and healthy foliage.

To protect the bulb, it is recommended to handle it with gloves, not to touch the glass, and to periodically check electrical connections and the cleanliness of the reflector.

After establishing an orderly canopy, the garden can be switched to warm HPS or red spectrum LEDs to boost flower fattening in the generative phase of cannabis cultivation .

Indoor cultivation SOLUX MH 400 W bulb.

In indoor growing , the cool 6500K spectrum creates a perfect environment for seedlings, pre-vegetative growth, and mother plants. The 400W wattage offers a balance between penetration and heat control, ideal for medium-sized grow tents. With properly adjusted watering and nutrient management, the canopy remains dense and uniform, ready for the transition to flowering.

What is the SOLUX MH 400W bulb used for?

It helps to promote vegetative growth under cool white light, improve foliage mass , strengthen stems, and reduce stretching. In cannabis plants, it is key for preparing branches that can support flower weight and for maintaining compact mother plants with robust, green leaves.

Tool for indoor cultivation SOLUX MH 400 W bulb.

• Type : Metal halide (MH) oriented towards vegetative growth.
• Power : 400 W | Color temperature : 6,500 K.
• Useful life : 8,000 h with gradual depreciation of the flow.
• Socket : E40 | Compatible with 400W magnetic or electronic ballast .
• Application : seedbeds, cuttings, mother plants and prolonged vegetative growth in cannabis cultivation .
• Synergies : excellent combination with HPS or warm LED grow lights during flowering.

How do I use a SOLUX MH 400W bulb?

1. Turn off the power and let the system cool down before installing.
2. Screw the SOLUX MH 400 W bulb into an E40 socket, holding it by the base and avoiding contact with the glass.
3. Connect to 400W ballast , check grounding, protections and wiring gauge.
4. Adjust photoperiod to 18/6 (or 20/4 if a faster rhythm is desired) and stabilize VPD with extraction and oscillating ventilation.
5. Start 50–70 cm from the canopy; gradually approach while monitoring leaf temperature and avoiding light stress.
6. Record the assembly date, clean the reflector periodically, and plan for replacement when the brightness drops noticeably.

Price of SOLUX MH 400 W bulb.

An excellent value option for efficient vegetative growth in medium-sized spaces. A reasonable investment that results in robust foundations, less stretching, and shorter establishment times before December 12th.

Where can I buy a SOLUX MH 400W light bulb online?

Available at Hydroponics Blanes , a trusted Grow Shop in Spain with discreet 24/48h shipping . Extensive catalog of MH, HPS, CMH/LEC and LED grow lights , plus ballasts, reflectors and controllers to complete any setup, with expert technical advice.

For those who prioritize a tidy, vibrant green vegetative growth, the SOLUX MH 400W bulb offers a 6500K spectrum, an E40 base, and a lifespan designed for continuous use. Ideal for root consolidation, canopy development, and preparing a strong canopy for flowering.

At Hydroponics Blanes, we offer customized packages, expert support, and discreet shipping throughout the peninsula. Our proposal is designed to scale up indoor cannabis cultivation with consistent results, both in MH+HPS configurations and in hybrids with LED grow lights .