SanClem is right! I advise you to listen to a true Guru such as SanClem.
Metal Halide is the ONLY way to go. More USEABLE light for plant. Bigger BUDS (vegative matter) not fluffy flowers.
Like SanClem I now use my old HPS units for door stops!!!
MajorBuds Reviewed by MajorBuds on . Recommended lights for budding poll Alright guys, how about some personal opinions on this question: Should I bud my plants under a 400 watt MH light or a 400 HPS light? Rating: 5