Hi, Everyone

Thanks for reading my questions. I'm buying a HPS light bulb after using a 150w HQI to flower for one and a half weeks. After reading threads on HQI and HPS, I've come to realize that it does make a difference between the two. Thanks for those who contributed to this topic and I really read that part.

Unfortunately, the only kind of HPS light bulbs I could purchase near my town which all have the color temperature of 2000 K. I then browsed through ebay and found out most of HPS on ebay were labled 2100 K. Is the 2000k HPS an industrial one used for street lamps? Is it proper for flowering?

Moving from 150W HQI to 250W or 400W HPS is a big step for me, I'm kinda concerned with the heat generated from a 400W HPS (I'm only using a normal fan and a open window for ventilation in my grow room/flowering room) Is there really a big difference between a 250w and a 400w HPS?

Thanks!

I'm posting this light spectrum diagram I saw from previous threads should anyone needs this diagram to explain to me. (sorry, I forgot who posted this on previous threads but thanks for letting me use it :thumbsup
notoriousb111 Reviewed by notoriousb111 on . Is there a difference? HPS of 2000k , 2100K or 2200 K? Hi, Everyone Thanks for reading my questions. I'm buying a HPS light bulb after using a 150w HQI to flower for one and a half weeks. After reading threads on HQI and HPS, I've come to realize that it does make a difference between the two. Thanks for those who contributed to this topic and I really read that part. Unfortunately, the only kind of HPS light bulbs I could purchase near my town which all have the color temperature of 2000 K. I then Rating: 5