DLI Joule Series 1000W DE HPS Grow Light Fixture
DLI Joule Series 1000W DE HPS Grow Light Fixture
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Order by 3pm Mon–Thu for next-working-day delivery · FREE delivery over £50 · Free Wembley pickup
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A Rectangular 1000W Footprint That Actually Fits Your Room
The DLI Joule Series 1000W is a complete double-ended HPS fixture with the ballast and lamp pre-fitted, ready to hang and run. Onboard electronics accept 120-240V mains and convert it to 400V for higher photon output, and the wide-angle reflector spreads light across a 120 x 180cm (1.2 x 1.8m) footprint from 90cm – a rectangular pattern that suits long rooms far better than the square footprint of most 1000W 400V alternatives. A built-in chimney effect pulls hot air away from the reflector, so the fixture sits closer to the canopy and stays clean.
What’s Included
- DLI Joule Series 1000W fixture, ballast pre-fitted
- DLI Horticulture Plus 1000W DE HPS lamp with enhanced blues and reds
- Wide-angle reflector
- 5m power cable with IEC connector
Key Benefits
- 120 x 180cm footprint at 90cm, covering the length of a room evenly
- Wide-angle reflector dissipates heat, so you need less headroom
- Chimney effect lets heated air flow away, keeping the reflector clean
- Runs on 120-240V with onboard conversion to 400V for increased photon output
- Enhanced spectrum lamp with boosted blues and reds
- RJ12 controller connection for central dimming
Low Headroom and Hot Spots Under the Lamp
Square-footprint fixtures leave the ends of a long room dim, and that is where you get slow growth, excessive stretch and airy buds. Hang them close and the canopy scorches; hang them high and the intensity is gone. The wide-angle reflector and chimney design tackle both, shedding heat upwards so the lamp runs nearer the tops without cooking them.
How to Use
- Unpack carefully and check the pre-fitted lamp and ballast are seated
- Attach the wide-angle reflector and connect the 1000W 400V lamp
- Power up with the 5m IEC cable from a 120-240V supply
- Connect the RJ12 cables if you are running a controller
- Hang at 90cm above the canopy to hit the stated footprint
Technical Specifications
- Lamp: DLI Horticulture Plus 1000W DE HPS, enhanced blue and red spectrum
- Wattage: 1000W
- Input voltage: 120-240V, converted onboard to 400V
- Footprint: 120 x 180cm (1.2 x 1.8m) at 90cm hanging height
- Reflector: Wide-angle, chimney-effect heat dissipation
- Ballast: Pre-fitted, onboard electronics
- Control: RJ12 controller connection
- Power cable: 5m with IEC connector

Free next-day delivery on orders over £50 (order by 3pm Mon–Thu). Heavy-item surcharges are always shown at checkout before you pay — we only ever charge what delivery costs us. Prefer to collect? Free pickup at our Wembley store.