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CMH Lighting Set Lumatek

Lumatek CMH 315W: ceramic metal halide with full-sun spectrum

Looking for a grow light that combines HID power with a near-natural sunlight spectrum? The Lumatek CMH 315W delivers a Colour Rendering Index above 90%, a full PAR spectrum including UV-A and UV-B, and 37,000 initial lumens for just 334W at the wall. PPF reaches 650 µmol/s — more usable photons per watt than most traditional HPS fixtures.

Choose the Aurora CMH 315W complete kit with dimmable ballast and 3100K Agro lamp, or order the CMH lamp on its own in 3100K (Agro) or 4200K (Daylight) for an existing Lumatek fixture. Rated for 14,000 hours of use with stable spectrum throughout. Fast delivery across Belgium.

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Kit Lumatek CMH 315W Agro 3100K controllable ballast set | CMH Lighting Set

Grow lighting Lumatek CMH 315 Watt

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CMH Bulb Lumatek 315W Agro 3100K 32500lm 12000h lifespan | CMH Lighting Set

Growlight CMH Lumatek 315 Watt

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Our Lumatek CMH 315W lighting range

Lumatek CMH 315W technology (Ceramic Metal Halide — also branded as CDM or LEC) produces a full-spectrum light output with a CRI above 90%, enriched with UV-A and UV-B wavelengths that conventional HPS and MH bulbs simply do not emit. The result: more compact growth, denser resin production, and stronger terpene expression at harvest.

Two products, one complete CMH system

This category brings together two products that combine into a full ceramic metal halide setup. The Lumatek Aurora CMH 315W complete kit is an all-in-one fixture with dimmable electronic ballast (square wave technology), hammertone reflector and 3100K Agro lamp — plug-and-play out of the box. Already running a CMH ballast or need a replacement lamp? Order the standalone CMH Lumatek 315W lamp, available in 3100K or 4200K with the same specifications as the original Aurora lamp.

CMH vs HPS: the spectral differences that matter

A traditional HPS 600W lighting kit outputs plenty of lumens, but the bulk of that power sits in the red-orange range. Great for flowering intensity, less effective for the plant-structure, resin and terpene factors that depend on blue and UV wavelengths. The Lumatek CMH distributes its energy across the full PAR range — from deep blue through far red, with UV-A and UV-B peaks. At 334W at the wall, 37,000 initial lumens and 650 µmol/s PPF, the CMH delivers more usable photons per watt than most HPS systems. Add to that noticeably lower radiant heat at canopy level — a meaningful advantage in compact grow spaces with tight lamp-to-plant distances.

Six-step dimmable ballast with complete protection

The Lumatek CMH ballast is purpose-built for ceramic metal halide technology, using square-wave operation for stable, flicker-free output. Six dimming steps give full intensity control across every growth phase:

50-60% — clones, seedlings and freshly transplanted young plants
70-80% — vegetative growth, ideal for smaller grow tents
90-100% — full bloom for maximum flower and resin production

Full circuit protection covers short-circuit, over/under-voltage, over-temperature and end-of-lamp-life detection. Technical specs: 334W input for 315W output (92% efficiency), power factor above 0.97, THD below 10%. Operates on 220-240V / 50-60Hz with maximum 1.60A input current.

3100K Agro or 4200K Daylight: which spectrum for which phase?

The Lumatek CMH lamp comes in two spectral variants. The 3100K Agro is a warm-spectrum lamp with enhanced red-orange wavelengths, optimised for flowering, bud density and resin development. The spectrum is broad enough to drive complete cycles from veg through harvest — a reason many experienced growers run this variant for the entire grow. The 4200K Daylight leans blue-white and suits the vegetative phase, mother-plant maintenance and clone rooting. This spectrum encourages short internodes and sturdy, compact structural growth.

Both variants use a PCA ceramic arc tube (Poly-Crystalline Alumina) that resists internal chemical reactions. The gas mixture stays stable, keeping spectrum and PAR output consistent through the lamp's life. Pulse-start technology speeds up warm-up and re-strike times and preserves lumen maintenance over thousands of hours. Both lamps use the PGZX18 base and work only with CMH-specific ballasts — never install in a standard HPS fixture. Rated life is 14,000 hours, which at 12 hours per day translates to roughly three growing seasons.

Coverage area and climate control

A single CMH 315W kit covers 80×80 cm to 100×100 cm optimally during flowering. For a larger 120×120 cm tent, run two CMH kits side-by-side — this layout delivers more even light distribution than a single central HPS point, better sub-canopy penetration and fewer shadow zones at the edges. Because CMH radiates noticeably less heat than HPS, sizing ventilation becomes simpler — a genuine advantage in compact lighting setups where every degree matters. Note: wear CMH-rated protective eyewear during work in the grow space — UV emissions from CMH are higher than those of standard HPS lamps.

FAQ - Frequently asked questions about Lumatek CMH lighting

What is the difference between CMH, CDM and LEC lighting?

CMH (Ceramic Metal Halide), CDM (Ceramic Discharge Metal-halide) and LEC (Light Emitting Ceramic) are three brand names for the exact same technology: ceramic arc tube lamps producing a broad, sunlight-like spectrum with a particularly high Colour Rendering Index.

Can I use a CMH lamp on my existing HPS ballast?

No. CMH lamps require a dedicated CMH ballast with square-wave technology and a PGZX18 socket. Standard HPS ballasts use E40 sockets and different ignition voltages — the systems are not compatible. Running the wrong ballast can damage both the lamp and the ballast.

Does a CMH 315W produce less heat than an HPS?

Yes, noticeably less. At 334W total input, the CMH 315W radiates substantially less heat than a 400W or 600W HPS. That simplifies climate control, particularly in smaller grow tents where the distance between lamp and canopy is tight and every degree counts.

How long does a Lumatek CMH lamp last?

The rated lifespan of a Lumatek CMH lamp is 14,000 hours. At 12 hours per day in flower, that works out to roughly three years of active use. Thanks to the PCA ceramic arc tube, the spectrum stays stable throughout that lifespan — unlike standard MH lamps, which lose spectral quality after just a few thousand hours.

Is CMH better than LED for indoor growing?

Modern LED panels offer higher photon efficiency per watt (up to 2.8 µmol/J vs 1.95 µmol/J for the CMH 315W) but require a higher upfront investment. CMH still wins on full-spectrum coverage with UV, lower purchase price and proven reliability. For resin-focused and terpene-rich crops, CMH remains a strong choice.

Order your Lumatek CMH lighting from Plant & Flower and enjoy fast, discreet delivery anywhere in Belgium.