HPS Grow Lights

Shop HPS Grow Lights by Component

Lamps
Replace or upgrade your grow bulb with our range of dual-spectrum, HPS, and metal halide lamps. Dual-spectrum lamps carry your plants through both vegetative and flowering stages with one bulb, while single-spectrum HPS lamps deliver concentrated red-spectrum output built specifically for flowering.

Reflectors
Choose from cool tubes and air-cooled reflectors designed to direct maximum light down to your canopy while managing heat in the grow room. The right reflector shape, matched to your tent, ensures even light distribution and helps prevent hot spots or shaded areas.

How to Choose the Right HPS Grow Light

Choosing the right HPS grow light comes down to three decisions: whether you need a complete HPS lighting system or a single component, dual-spectrum or single-spectrum HPS lamps, and the correct wattage for your grow tent size. Getting these right means reliable, high-PAR flowering-stage output without over- or under-powering your grow space.

What is a complete HPS lighting system?

A complete HPS lighting system consists of a ballast, a reflector, and an HPS lamp working together to deliver plant-usable PAR light to your canopy. If you're starting from scratch, buying these as a matched set is the simplest way to ensure full compatibility across voltage and wattage.

What is HID lighting, and how does HPS fit in?

HID (High Intensity Discharge) is the broader lighting category that includes both HPS and CDM grow lights. HPS grow lights sit within this group as the red-spectrum specialist, delivering the high-intensity output best suited to the flowering stage.

Dual-spectrum vs single-spectrum HPS lamps — which do I need?

Dual-spectrum HPS lamps combine red and blue wavelengths, making them a practical single-bulb option for growers who want to cover vegetative growth and flowering without switching lamps. Single-spectrum HPS lamps concentrate purely on red-spectrum output, better suited to growers running a dedicated flowering light alongside separate veg lighting. Browse both lamp types in our HPS Lamps range to compare.

Magnetic vs digital ballast — which should I choose?

A digital ballast is the better choice for most growers — it runs cooler, operates silently, and extends HPS lamp life compared to a magnetic ballast. If you're upgrading an older HID setup, switching to a digital ballast is one of the easiest ways to improve reliability and reduce running costs.

How many watts do I need per square metre?

As a general guide, budget one 400W HPS lamp per 1m x 1m grow area, or one 600W HPS lamp per 1.2m x 1.2m grow area. Always check the true wattage listed on each lamp or kit against your tent's footprint before ordering.

Why Buy HPS Grow Lights from Hydro Land

Hydro Land supplies HPS grow lights, lamps, ballasts, and reflectors sourced directly from established manufacturers including Sunmaster, Osram, Sylvania, Philips, and Maxibright, so every component you buy is genuine and correctly specified. We stock both 240V and 400V options, and our team can help confirm voltage, lamp base, and ballast compatibility before you order, reducing the risk of buying a part that doesn't match your existing setup.

Beyond stock quality, our technical support draws on real working knowledge of HID lighting systems from matching wattage to tent size, to advising on dual-spectrum versus single-spectrum lamps for your specific grow stage. Every order is dispatched quickly from the UK, and if a question comes up after delivery, you're speaking directly with a team that understands the equipment, not a generic customer service line.

Frequently Asked Questions

What's the difference between HPS and dual-spectrum lamps?
Standard HPS lamps produce concentrated red-spectrum light built for flowering. Dual-spectrum lamps blend red and blue wavelengths, letting one bulb support both vegetative growth and flowering.

What's included in a complete HPS lighting system?
A complete HPS lighting system includes a ballast to regulate power, a reflector to direct light onto the canopy, and a lamp to emit plant-usable light.

Should I use a magnetic or digital ballast?
A digital ballast is generally the better choice. It runs cooler, operates silently, and extends lamp life compared to a magnetic ballast.

How many watts do I need for a 1.2m x 1.2m tent?
A 1.2m x 1.2m grow tent typically needs a 600W HPS lamp to provide sufficient light intensity across the full canopy.

How long does an HPS lamp last before losing output?
HPS lamps typically need replacing every 9–12 months, as light output gradually degrades with use even if the bulb still switches on.