I have 2 175 MH lights that I bought from Hamilton Tech. I just got the bulbs replaced a month ago but now both the bulbs are having trouble igniting. They will to ignite and turn on for 20-30 secs but then they shut off for about 5 mins and try to ignite again. Does anyone know why I would be haveing this problem? It seems that eventually they do ignite since when I normally get home at around 6 (4hrs after they are suppose to come on) they are often on and if not light up shortly afterwards. I was wondering if anyone else has had this problem or has any possible solutions for me. Thanks.