I have a 600 digital ballast that can run 25%, 50%, 75% or 100% power. Question, which provides better growth during veg. stage, a 400w MH bulb, or 600w HPS bulb? My hydro store guy doesn't sell a 600w MH, he said most people use a 600w HPS during veg and flower stages. Thanks for your advice.

Peace, PIF:thumbsup:
Pay It Forward Reviewed by Pay It Forward on . Which is Better, 400w MH or 600w HPS During Veg. Stage I have a 600 digital ballast that can run 25%, 50%, 75% or 100% power. Question, which provides better growth during veg. stage, a 400w MH bulb, or 600w HPS bulb? My hydro store guy doesn't sell a 600w MH, he said most people use a 600w HPS during veg and flower stages. Thanks for your advice. Peace, PIF:thumbsup: Rating: 5