ok so i rang the supplier and getting the bulbs is no problem. from what you are saying 1 ballast can hold 2 bulbs, do you have like a part number or some kind of reference number on your ballast that i can use to give the supplier so he can get the ballast? ok so ill grow 3 plants in my tent from start to finish. 2 ballast with 4 55w 6400k bulbs to veg then to flower 2 55w 2700k and 2 80w 2700k will that do the job? but if you can some how help me get the part number of the ballast to get me started that would be great. thanks again