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Pairs well with
The Pro Grow 1000W DE Metal Halide Lamp delivers 4200K daylight spectrum across a balanced full-cycle output — a single lamp built to handle veg, flower, and finish on the same fixture. Pulse-start technology, an extruded ceramic arc tube, and low-iron quartz glass mean serious optical quality for serious grow rooms. Designed to run on 240V or 400V digital ballasts and engineered for the medical-grade and connoisseur grower.
Specifications
- This is a Double-Ended (DE) lamp — fits K12x30s sockets only. Not compatible with single-ended (SE) E40 reflectors.
- Requires a digital electronic ballast — magnetic ballasts won't fire a DE MH lamp correctly.
- DE lamps run hotter than SE — make sure your extraction is properly sized before firing one up.
- Hot restrike takes 12 minutes. Don't try to re-ignite a hot lamp before then or you'll cook the bulb early.
- Always handle with clean gloves or a soft cloth. Skin oils on the quartz cause hot spots and shorten lamp life.
- Always operate in an enclosed luminaire that complies with UL 1598 — never run an MH lamp in an open fixture.
How To Use
Pairs Well With
Browse digital ballasts rated for 1000W DE — 240V or 400V. Magnetic units won't fire this bulb.
DE ReflectorsNeed a reflector? Browse double-ended reflectors with K12x30s sockets compatible with this lamp.
Inline Exhaust Fans1000W DE puts out heavy heat — pair with a properly sized inline fan to keep canopy temps in check.
Rope Ratchets by Cultiv8Hang your reflector at the right height and adjust easily as your canopy stretches into bloom.
Frequently Asked Questions
Will this lamp run on a magnetic ballast?
No. DE MH lamps require a high-frequency digital electronic ballast. Magnetic ballasts cycle too slow and won't fire a DE bulb correctly. If you're on a magnetic setup, look at single-ended (SE) lamps instead.
Is this a 240V or 400V lamp?
Both. The lamp is engineered for use with quality digital ballasts rated up to 100,000 Hz — covering both 240V and 400V systems. Just match the lamp wattage to your ballast wattage.
What does the 4K spectrum mean for my plants?
4200K is a balanced daylight spectrum — closer to mid-morning and late-afternoon natural light. It contains stronger blue and UV wavelengths than HPS lamps, which drives stem thickness, terpene production, and essential oil development. Pro Grow rates this lamp 75/100 for yield and 85/100 for medicinal-grade output.
Can I use this lamp for both veg and flower?
Yes. The 4K daylight spectrum is balanced enough to run as a single lamp through all stages — veg, flower, and finish. Many growers use it as their primary bloom lamp for medical-grade output where terpene and essential oil profile matters more than raw yield.
What's the difference between this and a 10K finisher lamp?
The 4K Daylight is a balanced full-cycle lamp suitable for the entire crop. A 10K Finisher pushes much harder into the UV range and is typically used only in the last 2–3 weeks of bloom to drive terpene and resin production. If you're running a single lamp through the full cycle, 4K is the right choice.
Why does it take 12 minutes to restart?
That's the hot restrike time. After power-off, the arc tube needs to cool fully before it can re-ignite — trying to restart sooner damages the lamp and can shorten its life. Plan for a 12-minute window if you've had a power interruption.
Does it come with a warranty?
Yes. Pro Grow backs every lamp with a one-year manufacturer warranty against defects. Keep your packaging and proof of purchase in case you need to make a claim.
Do you ship Australia-wide?
Yes — we ship across Australia from our Tasmanian base. Free shipping kicks in over $499*. DE lamps are packed carefully to handle transit, but if anything arrives damaged, give us a yell and we'll sort it.
One Lamp. Full Cycle. Medical-Grade Output.
4200K daylight spectrum, pulse-start tech, ceramic arc tube — built for serious growers.