10 Best 400w HPS Grow Light of 2024: Reviews & Guide for 400w Grow Lights

Harness the power of this extraordinary 400W HPS Grow Light and witness a surge in your plant's vitality! Its exceptional PAR output mimics natural sunlight, providing your precious greenery with the essential energy they crave for robust growth and abundant yields.

The meticulously engineered enhanced red and orange spectrum specifically targets chlorophyll and carotenoid pigments, igniting vigorous flowering and fruiting. Bask your plants in the glow of 55,000 ultra-bright lumens, ensuring deep penetration even into dense canopies. The E39 base allows for effortless integration with standard fixtures, making setup a breeze.

The SPF4000 LED Grow Light is a top-of-the-line solution for indoor plant cultivation, designed to deliver optimal growth and yield. Equipped with high-efficiency LEDs, this powerful 400-watt light provides an ideal full spectrum for both vegetative and blooming stages. The advanced diodes and IR lights ensure excellent light penetration and spectrum coverage, promoting healthy plant development and maximizing yields.

One of the significant advantages of this grow light is its energy efficiency. It generates minimal heat compared to traditional lighting systems, resulting in reduced energy costs and a cooler growing environment. This feature not only helps to lower operational expenses but also minimizes the risk of plant stress caused by excessive heat. The unit's construction is designed with durability and longevity in mind, ensuring reliable performance for multiple growing seasons.

Prepare to elevate your indoor gardening game with the SYLVANIA 400W Plantastar High Pressure Sodium Grow Light. This horticultural powerhouse emits a colossal 50,000 lumens, casting an illuminating embrace over your precious plants. Its meticulously crafted 2100K color temperature replicates the natural sunlight spectrum, fostering vigorous growth and vibrant foliage.

Experience unparalleled energy efficiency with this grow light's extended lifespan of over 10,000 hours, reducing your energy consumption and saving you money. Installation is a breeze thanks to its compatibility with E39 sockets, ensuring a seamless integration into your existing lighting system. Embrace the future of indoor gardening with SYLVANIA's 400W HPS Grow Light and witness your plants flourish under its radiant glow!

The HTG Supply 400-Watt High Pressure Sodium (HPS) grow light is a robust and efficient lighting solution for indoor plant cultivation. Its 400-watt HPS bulb mimics the natural sunlight spectrum, providing plants with the optimal light conditions for vigorous growth and abundant yields.

The complete grow light setup includes a premium reflector, a reliable ballast, and the HPS bulb itself, eliminating the need for additional purchases and assembly. The reflector effectively directs and intensifies the light output, ensuring maximum coverage and light penetration. The ballast regulates the electrical flow to the bulb, ensuring stable and consistent illumination.

Harness the power of horticulture with our top-notch 400W HPS Grow Light, engineered to maximize plant growth and yield. With its high PAR Enhanced Red and Orange Spectrum, this grow light mimics the natural sunlight spectrum, promoting vigorous photosynthesis and healthy plant development. The ultra-bright 55,000 lumens ensure deep light penetration, reaching even the lowest leaves for uniform growth and increased yields.

Crafted with precision, this grow light features a color temperature of 2100K, optimal for both the vegetative and flowering stages of your plants. The E39 base ensures compatibility with standard HPS ballasts, making installation a breeze. However, it's important to note that you'll need to purchase a compatible ballast separately and that HPS grow lights tend to consume more energy compared to LED alternatives.

Step into the realm of exceptional indoor horticulture with our premium 400W HPS grow light system. This meticulously crafted system harnesses the power of high-pressure sodium lighting to deliver an unparalleled growing experience. Our HPS bulb boasts an impressive 400 watts of power, emitting an intense and balanced light spectrum that mimics natural sunlight, promoting vigorous plant growth and optimal yields. Furthermore, the included digital dimmer grants you the flexibility to adjust the light intensity, ensuring your plants receive the precise lighting they need at every stage of their growth cycle.

This comprehensive grow light system is designed to cater to the needs of both seasoned gardeners and aspiring plant enthusiasts. The high-quality air-cooled reflector hood effectively directs light downward, minimizing wasted energy and ensuring maximum light penetration to your plants. Its durable construction and thoughtful design guarantee years of reliable operation, making it an investment in your indoor gardening success. Upgrade your indoor garden today with our 400W HPS grow light system and witness the transformative power of optimized lighting on your plant's growth and vitality.

The iPower 400W HPS Grow Light Bulb Lamp stands as a formidable lighting solution for indoor gardening enthusiasts. Its meticulously engineered spectrum, amplified with high PAR intensity, ensures optimal plant development. The tailored CCT of 2100K strikes a perfect balance, fostering lush growth and vibrant blooms.

The inclusion of specialized red and orange wavelengths further elevates the lamp's efficacy. These wavelengths mimic natural sunlight, triggering vigorous photosynthetic activity. As a result, plants thrive, exhibiting accelerated growth rates and increased yields. However, it's crucial to note that the lamp requires a compatible ballast to function, adding a separate expense. Additionally, its substantial size may pose challenges in confined grow spaces.

The iPower 6-Inch Air-Cooled Reflector Hood unlocks the full potential of your indoor garden by providing optimal lighting conditions for your plants. This grow light hood is engineered to maximize light output and distribution thanks to its highly reflective aluminum construction. It efficiently directs light downward, ensuring deep penetration into your plant canopy. And to top it off, the air-cooled design effectively dissipates heat, preventing overheating and promoting optimal bulb lifespan. With this grow light hood, you can expect enhanced plant growth, increased yields, and lush indoor harvests. Whether you're a seasoned grower or just starting out, the iPower 6-Inch Air-Cooled Reflector Hood is an excellent investment in your indoor gardening endeavors.

Installation is a breeze with this grow light hood. It easily fits over any compatible grow light, giving you the flexibility to upgrade your existing system. The durable construction ensures years of reliable use. However, it's important to note that you'll need to purchase a separate HPS bulb to complete your grow light setup. Additionally, the cooling fan may produce some noise, which is something to consider if you have a noise-sensitive environment. Despite these minor considerations, the iPower 6-Inch Air-Cooled Reflector Hood remains an excellent choice for boosting your indoor harvests.

The FLORALUX 400w High Pressure Sodium Grow Light Fixture empowers indoor gardeners with a potent lighting solution for their cultivation endeavors. Its 400-watt HPS bulb emits a balanced spectrum of light, mirroring the natural sunlight that plants crave for photosynthesis and healthy development. As a result, you can expect robust plant growth, increased yields, and superior bud quality.

While the HPS technology guarantees exceptional light intensity, it also generates more heat than other grow lights. To mitigate this, ensure proper ventilation or employ cooling systems to prevent overheating. Furthermore, the fixture requires a separate ballast for operation, which may require additional setup. Despite these considerations, the FLORALUX 400w HPS Grow Light Fixture remains a top choice for serious indoor growers seeking the benefits of high-intensity, targeted lighting for their precious plants.

The iPower 400 Watt HPS Grow Light System Kits provide a comprehensive and reliable solution for indoor gardening enthusiasts looking to maximize plant growth and yields. This complete system includes a 400W high pressure sodium (HPS) bulb, a high-quality ballast, a durable wing reflector hood, a convenient 7-day timer, and protective safety glasses, ensuring you have everything you need to get started right out of the box.

The 400W HPS bulb emits an ample amount of photosynthetically active radiation (PAR) and lumens, providing optimal conditions for plant growth and development. The adjustable wing reflector hood enables you to direct and concentrate the light output, maximizing the efficiency and coverage of your grow space. Additionally, the included 7-day timer automates the lighting schedule, ensuring your plants receive the necessary light cycles for healthy growth.