I really need some help from you people!!!! i have 2 400 watt hps ballist/lights!!these are industral type hps lights!! Now im not a rich person at all!!! I collect SSD to give you an idea of my income!! Now on thes HPS ballist will run both mh hps and even mercury vapor bulbs I relly need to know what type of specs i need on the mh and the hps bulb for me to get a good harvest like the lumens?how much red and vilet colors IM coonfused on the right ones to use!!! also i would like a decent working lasting bulb that is inexpesive??? Please help a poor man out THANKS FOR EVERYONE THAT CAN HELP!!!! Cyrus
If those ballasts can indeed run MH then just get a 400w MH bulb for each fixture, rated at a color temp of or near 6500k, and a 400w HPS bulb for each fixture, rated at a color temp of or near 2700k.