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Grow light reflectors for maximum light output

A grow light reflector captures the light your HPS or MH bulb sends upward and sideways, directing it down onto the canopy. Without one, up to half the emitted light never reaches your plants. Hammer-finish reflectors spread light evenly across your tent, while mirror-finish models concentrate the beam for narrow or tall spaces — each type suits a different tent size and heat management approach.

For advanced setups, the Adjust-a-Wing offers adjustable spread and the Cool Tube vents heat directly around the bulb via your extraction system. Every reflector fits the standard E40 socket. Fast, discreet delivery across Belgium and beyond.

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Hamertone Reflector

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Mirror Reflector

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Reflector Plasma Light

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Out-of-Stock

Adjust-A-Wing Avenger Medium 75% more grow area spreader | Shade

Adjust-A-Wing Avenger Medium + Super Spreader

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Adjust-A-Wing Avenger Large + Super Spreader

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Adjust-A-Wing Lamp Holder

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Cool Tube Prima Klima 125x480mm

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Cool Tube Prima Klima 150x580mm

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Our reflector range for HPS and MH

A quality reflector turns a bare bulb into a properly directed light source. Instead of losing lumens to walls and ceiling, it channels them straight down to the canopy — more usable light with the same electricity bill. At Plant & Flower, your Belgian grow shop since 2011, we stock every type of reflector — from entry-level models to professional Adjust-a-Wing and Cool Tube systems, compatible with your HPS or MH bulb with E40 base.

Why a reflector is essential

An HPS or MH bulb emits light in every direction, including upward and sideways. Without a reflector, a large portion of those photons is wasted in zones where no plant grows. A properly sized reflector captures those lumens and concentrates them toward the canopy, increasing received PPFD by 40-60 % depending on the model. Pure gain without raising your energy consumption.

Available reflector types

Hammertone reflector — textured surface that spreads light broadly and evenly, ideal for 60 × 60 to 100 × 100 cm tents
Mirror reflector — smooth highly reflective surface for a concentrated beam, ideal for narrow or tall grow spaces
Adjust-a-Wing Avenger Medium — professional reflector with adjustable wings, uniform coverage up to 1.2 × 1.2 m
Adjust-a-Wing Large + Super Spreader — large format with diffuser for tents 1.5 × 1.5 m and larger
Cool Tube Prima Klima 150 mm — glass tube that vents bulb heat via extraction, allowing closer lamp positioning

Choosing the right reflector for your setup

For a 60 × 60 to 80 × 80 cm space with a 250W or 400W bulb, a hammertone or mirror reflector works well. Larger areas of 100 × 100 cm and above with a 600W lighting set benefit from an Adjust-a-Wing Large for more even edge-to-edge coverage. If heat management is a concern, a Cool Tube is the most effective solution: the glass tube channels extraction air directly around the bulb, reducing canopy temperature by 5-8 °C and letting you position the lamp up to 20 cm closer to plants without windburn risk. Pair your reflector with a matching ballast and a grow tent with highly reflective walls for optimal results.

Essential accessory: the lamp holder

Some reflectors like the Adjust-a-Wing ship without a lamp holder. In that case, a replacement Adjust-a-Wing lamp holder is essential to connect your E40 bulb. Clean the reflective surface every 4-6 weeks with a soft cloth and isopropyl alcohol — a dirty reflector can lose up to 20 % of its efficiency.

FAQ - Frequently asked questions about reflectors

What is the difference between a hammertone and mirror reflector?

A hammertone reflector has a textured surface that diffuses light over a wider area for more even coverage. A mirror reflector focuses the beam more tightly for higher intensity at the centre. Hammertone suits wider spaces, while mirror works better in narrow or tall setups.

Do I need a reflector if I use LED grow lights?

No. LED panels have built-in optics that direct light downward. These reflectors are designed for HPS and MH bulbs that emit light in all directions and rely on a reflector to redirect it onto the growing area.

When should I choose a Cool Tube over a standard reflector?

Choose a Cool Tube when heat is a problem. The glass tube channels bulb heat through your extraction ducting, reducing canopy temperature by 5-8 °C. This lets you position the lamp up to 20 cm closer to plants for higher light intensity without heat stress.

How often should I clean my reflector?

Every 4-6 weeks. Dust and residue on the reflective surface can reduce light output by up to 20 %. A soft cloth with a small amount of isopropyl alcohol is enough to restore full reflectivity.

At what height should a reflector hang above plants?

Height depends on wattage: 30-40 cm for 250W, 40-50 cm for 400W, 50-60 cm for 600W. With a Cool Tube, you can hang the lamp 10-20 cm closer thanks to heat venting. Use the hand rule: if the heat is uncomfortable on your skin at canopy level, it's also uncomfortable for the leaves.

How do I securely mount a reflector in my tent?

Use spring hooks or ratchet hangers attached to the upper tent bars, never directly to the top fabric. Adjust-a-Wing and Cool Tube reflectors usually ship with their own hanging rings. Check your tent's maximum load rating — a complete reflector can weigh 2-3 kg including bulb and holder.

Browse our complete range of reflectors at Plant & Flower, with fast delivery throughout Belgium. Our team gladly advises on choosing between hammertone, mirror, Adjust-a-Wing or Cool Tube based on your tent and heat management needs.