How many watts do you need per square foot of growing space?

Grow lights for indoor plants require 20 or more watts (power draw) per square foot of plant coverage. The wattage per square foot in the grow space can be increased up to a maximum of 50 watts per square foot. Above this amount, the indoor plant light intensity may be too strong and can stunt the growth of the plants.

G8LED indoor grow lights have recommended grow area coverage amounts published on the product pages. For example, the G8-900 Veg/Flower covers 24 square feet (6’ x 4’). These are guidelines to help the grower plan for his space requirements. The number of indoor plant lights can be increased or decreased depending on the specifics of the indoor grow project. Another important consideration when planning for your grow room is the PAR (Photosynthetic Active Radiation) and PPFD (Photosynthetic Photon Flux Density).

Watts per Square Foot at recommended coverage areas

Power Draw    Watts per SF

G8LED 900W              540                   23

G8LED 600W              380                   21

G8LED 450W              270                   23

G8LED 240W              140                   23

Supplemental lighting

Power Draw    Watts per SF

90W Flower Booster     75                   8

The 90W Red Flower Booster is a supplemental light for increasing the wattage and amount of 630nm and 660nm red color in the grow room during flowering. This light is not intended to be a standalone light. The Flower Booster should be used alongside other indoor growing lights and will increase the total Watts per square foot.