That's a feeling, not a fact.
My avatar was grown from start to finish with HPS.
FACT
lilroach made some great points.
See my sig line and then get educated. HPS contains the blue spectrum and MH contains the red. Both will raise cannabis. I know from experience. Your plants don't care. You and the hydro salesman do.
The hydro salesman seeing you coming as just another sucker bet will have you believe otherwise as he loads you up with conversion lamps, one of this and one of that.
Where guys like you go wrong is chasing down your source of information in cannabis forums....then comes the "aw shits" when you find out you pissed off your time "looking for love in all the wrong places...
where guys like you go wrong is assuming you know everything and trying to blast anyone who contradict your beliefs. that's a fact.
i am educated and really don't need to take advice from you. especially since your claim to fame is your avatar. no offense...that plant looks unhealthy as shit. that's a fact. and all your pic does is prove my point...that plant is about 3' taller than i would need to get the same about of weight.
if you think there is no difference between mh and hps then you don't even deserve to be in this conversation. then you go on to state that i'm making the hydro store guy rich. last i checked no one is getting rich off the difference in price between a hps and mh bulb. a bulbs effective life in either spectrum is the same. so how is the hydro store guy getting rich if i use an mh instead of an ups?
i don't get my information off this forum. i actually research it and base my decisions on experimentation in my grow room. i prefer to trust the actual professionals rather then guys like you. you've probably never been wrong in your entire life. you might wanna do some real research on this because you are starting to look like a complete ass.
these are my plants...not even 18" tall...6+ ounces per plant.