Enjoy healthy, great-tasting crops time after time with 400 watt HID grow lights – a reliable hydroponic lighting choice for both novice and professional growers. With the right 400w setup, you get strong light intensity without excessive heat, making it ideal for many indoor grow tents and rooms.

400W HID Grow Lights for Every Budget

At The Horticulture Company (THC), we stock a diverse range of 400w grow lamps to suit all budgets and experience levels. Our selection includes:

• Affordable cheap grow lights under £20 – perfect for beginners or backup lamps

• Premium Venture Metal Halide (MH) lamps – offering a natural white appearance and superb colour stability

This means you can choose the right balance of performance and price for your grow.

Lamps for Every Stage: Seedling to Bloom

Whether you’re growing seedlings, driving vegetative growth, or pushing plants through flowering and bloom, we have a 400w lamp to match. Our HID range includes options from well-known hydro brands such as:

• Sunmaster

• Osram

• Adjust-A-Wings

• Philips

With trusted brands and proven spectra, you can support strong, consistent growth at every stage.

Build the Ultimate Indoor Growing Environment

A good 400 watt HID lamp is a solid foundation for any indoor garden. However, when you pair your lighting with our essential hydroponic nutrients, you can transform your grow tent into a complete, high-performance environment. Together, the right light and feed help you achieve perfect crops again and again.

Need Help Choosing the Best 400W HID Light?

Selecting the ideal lamp, spectrum and brand can feel confusing at first. Fortunately, our hydroponics experts are here to guide you through every step.

For in-depth advice about hydroponic lighting systems, call 01926 511151 or email our team today. We’ll help you choose the best 400 watt HID grow lights to keep your plants healthy, productive and bursting with flavour.