Dr. Who
Well-Known Member
Oh and its HPS you run if your going start to finish and find... changing a bulb... difficult.
WRONG one!
MH
Many high end breeders and growers run nothing but MH.
I run it till the week before the flip and switch to HPS.
Around 3 weeks into bloom, I switch BACK to the MH and run them out.
Higher quality, higher yields, denser buds.