one things for sure,make sure your ballast is ok running different wattage bulbs,their not to happy when they've been made to light 150w and you change to 80w(also a ballast made for mh will find it hard to run a hps(some dont work at all)).you also want the higher wattage bulb to be the hps(mh for veg,hps for flower.(you can get away with cfls in veg).more light in flowering stage=more buds).good luck!
buttyrekka Reviewed by buttyrekka on . Metal Halide Question - Help please :) Hi guys, Iv just gotten a 150w MH and the bulb it came with was a ES Coated 4000k MH. The bulb was quite expensive but i wanted to know if it was correct spectrum for vegging ? I also got a Phillips 70w HPS SON lamp that fits in the same lamp. Im not sure of the spectrum or lumens but would like to know if this could be used for veg or better left for flower ? Thanks guys :D Rating: 5