These are some of the most common grow light setups that I could find and here are some approximate coverage areas for them. I am not saying that these are written in stone or that this is what they actually are, all I am saying is that these are the coverage areas that I found to be the most common.
1000 watt hps light -36 – 64 sq. ft. depending on the mounting height and reflector type and shape. At least 4 ft above plant
400 watt hps grow light -16 – 36 sq. ft. depending on the mounting height and reflector type and shape At least 4 ft above plant
400 watt mh grow light -16 – 36 sq. ft. depending on the mounting height and reflector type and shape At least 4 ft above plant
175 watt mh grow light -1 – 3 sq. ft. depending on the mounting height.Hang 1-2 ft above plant
150 watt hps grow light -1 – 3 sq. ft. depending on the mounting height. Hang 1-2 ft above plant
250w hps grow light -1 – 4 sq. ft. depending on the mounting height. Hang 1-2 ft above plant
t5 grow light
600 watt hps grow light -36 – 64 sq. ft. depending on the mounting height
BloomBoss Square LED Grow Light 14 watt Grow Panel- 1 sq.ft.
BloomBoss Spot LED Grow Light- up to 4 sq. ft.
BloomBoss 45 watt LED Grow Light- 4 sq. ft.
Pro Series Full Spectrum 300 Watt 300W LED Quad Band Hydroponic Grow Light – 36 sq. ft.
Eloofa 90 watt grow light- 3ft x 3ft area depending on height set at
