Well the light that I ordered came in today. It's a 600 watt hps that I got from htg supply. It came with the ballast and reflector and everything. However when I plug it in it comes on for like 15 seconds and then turns off for like 30 seconds. What the hell is going on? Thanks.
it sounds like you have a lower wattage bulb than your ballast, so its trying to reignite the lamp...
You bought from the right place though. Those are good people and they will make sure you are satisfied. Just call them and they will make it right. Good luck.