Quote Originally Posted by PartypokerPlayer
u have hps so thats the best light for flowering...or so its been said...
Dude it's a proven fact not just an novel thought. Mh will take longer to flower and will not produce the same amount of THC as HPS will....FACT.

If you grow 100% with HPS I suggest you use a multi-spectrum bulb (enhanced bulb) and you would do just fine. There are other environment conditions you can control to increase yield and quality.