Lighting
240W High-Efficacy LED (2.9 umol/J)
Stage: All stages
$337
Efficacy is how much usable light a fixture makes per watt it burns. At 2.9 umol/J this board delivers the photon output growers expect from a 400W-class fixture while drawing 240 watts from the wall.
Over a 12-hour flowering day that difference is real money: roughly 1.9 kWh a day instead of 3.5, which is a meaningfully smaller line on your power bill every month for the same harvest.
Dimmable from 0-100% so one fixture handles seedling through late flower, and passively cooled so there is no fan to fail or hum.
Specs
| Power draw | 240W at full output |
|---|---|
| Efficacy | 2.9 umol/J |
| Coverage | 3x3 ft flower / 4x4 ft veg |
| Running cost | About $8-9 a month at 12/12, 15 cents per kWh |
| Dimming | 0-100% analog dial |
| Cooling | Passive, fanless |
Which kits include this
This is an add-on rather than a standard kit item — the builder only adds it when your answers call for it.
Build a kit around it →Pairs with
Digital Light Timer (Dual Outlet)
Locks in 18/6 veg and 12/12 flower photoperiods so your plants never get confused.
$31
6" EC Inline Fan, Ultra-Quiet Low-Watt
Brushless EC motor: same airflow as a standard 6-inch fan on about a third of the watts.
$181
Wireless Temp & Humidity Reader
Logs VPD-friendly temp/RH data to your phone with min/max alerts.
$44
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Questions about this product
- Is a 240W light really enough?
- For a 3x3 canopy, yes. Yield tracks usable photons delivered, not watts consumed, and a high-efficacy board delivers more photons per watt than older fixtures.
- How much will it add to my power bill?
- Around 1.9 kWh a day at 12 hours on, so roughly $8-9 a month at 15 cents per kWh. Our light coverage calculator works this out for your exact tent and rate.
- How high should I hang it?
- Measured canopy to fixture: 26 – 32 in over seedlings at low power, 22 – 28 in in veg, 16 – 22 in through peak flower, and 20 – 26 in in the last ripening weeks as you ease the intensity back. Hold the back of your hand at canopy height for 30 seconds. If it feels uncomfortably hot, the light is too close for the plant too.