How many LED grow light watts are required per square foot of grow area?
Most people think they need a certain wattage for a grow area. While wattage can be a good approximator for LED coverage, it’s not extremely accurate because coverage is affected by other factors, including how efficient the LEDs are and their beam angle. That said, if you’re a hobbyist growing in a tent or other small space, you can safely use wattage to give you a general idea of the proper LED grow light coverage for your area.
Here’s our quick-and-dirty guide to determine how LED grow light wattage can be sized to the square feet in a grow room or grow tent:
Vegetative growth: 20 watts per square foot.
Flowering: 30 watts per square foot.
In the table below, you can go up or down (+/-) 10% from the wattage calculations seen here and still have an acceptably sized LED grow light. For example, if we look at the 4’ x 4’ grow tent we can see 600 watts for flowering. Dropping down 10% would be 540 watts, while increasing 10% would be 660watts. Anything in that range will work well, but remember: The lower the wattage in your garden, the lower your yield.
Phantom Photobio•MX 680W 100-277V S4 Spectrum
The PHOTOBIO•MX changes everything. We took a step back, evaluated all the fixtures on the market, and then set out to do things entirely different. The result is a 680W fixture delivering 15% more light to your canopy, using 35% less power than a 1000W DE fixture. Increase yields while driving down operational cost. The spectrums were developed in a private research laboratory to drive flower yield and elicit market desirable traits in short day resin producing crops.
PHOTOBIO•MX abandons the bar style concept in favor of a more efficient contiguous circuit board to deliver unparalleled PPFD uniformity to the canopy. Extensive thermal modeling and testing was conducted to ensure diodes remain well below operating temperature to maintain consistent light output and yields. 0-10V PHOTO•LOC Light Output Control allows you to precisely regulate the amount of light delivered to your plant canopy when paired with the available Autopilot PX Series controller.
PHOTOBIO•MX’s design is multilayer rack centric, providing the ability to double or triple your canopy square footage within your existing structures footprint. The driver is mounted below the fixture to maximize vertical grow space and has the ability to be remotely mounted.
PHOTOBIO•MX is designed for the serious horticultural professional looking to increase business sustainability by reducing power consumption while simultaneously improving crop performance and yield.
ECO Farm ECO NET 680W Samsung 301B Chips LED Grow Light
The industry-leading LEDs will keep your plants blooming crop after crop. 680w 2400 individual LED's covering the full-color spectrum 3000K 5000K 660nm our grow lights are ideal for all growth stages. VEG FOOTPRINT: 6 x 6 ft / FLOWERING FOOTPRINT: 5 x 5 ft. VEG FOOTPRINT: 7 x 7 ft / FLOWERING FOOTPRINT: 6 x 6 ft.Plus, it works and supports all growth stages such as full bloom and high yield growth.
Many growers are switching from the heat-producing HPS lights to our ultra-high performance LED bar lights. ECO Farm LED grow lights utilize the latest technology on the market–from intensive research for optimum performance, to customized spectrums to achieve the highest yields possible. Designed to outperform Fluence and Gavita’s
The ECO Net LED grow light has a dimming knob that powers the unit with an ON/OFF switch and dims anywhere from 0-100. Such customization makes our LED bar light perfect for different plant stages and growing environments. We also offer a separate controller that enables the sunrise-sunset dimming feature, timing functions, and other useful controls.
LED Specs Compared
Light Spectrum Differences
Phantom Photobio•MX 680W
ECO Farm ECO NET 680W
Generally, greater levels of red (600nm) and deep red (660nm) light are used during the reproductive phase, while greater levels of blue (450nm) light are used during vegetative growth. In this case both LEDs use sufficient levels of both red and Blue radiation and can therefore cultivate both vegetative and reproductive crops.