Quote Originally Posted by stra8outtaWeed
don't waste your money on the first link!

yes there are big differences in bulbs....generic MH/HPS are not horticultural lights..they mayt hit some of the spectrums but are not designed or manufactured for growing...look at Hortilux or any well known brand of grow bulbs....if you go to your local hydroponics store they can help steer you in the right direction!:thumbsup:
+1, I used a generic HPS bulb during flowering and saw okay results. Nothing to complain about.. but once I switched to the Hortilux Eye Super HPS... I noticed some huge growth! :thumbsup: