Hi-ho,
Shopping around, I find a typical 400w HPS bulb has about 32k lumens in 21Kelv. for about $25.
The "grow light" versions seem to have maybe 10% more output. They have a little broader spectrum, but still peak at the same wavelength. They cost around $75.
Has anybody done a grow comparison?
Advanced thanks for sharing the wisdom!
Shopping around, I find a typical 400w HPS bulb has about 32k lumens in 21Kelv. for about $25.
The "grow light" versions seem to have maybe 10% more output. They have a little broader spectrum, but still peak at the same wavelength. They cost around $75.
Has anybody done a grow comparison?
Advanced thanks for sharing the wisdom!