I have a 40g breeder and I am looking into buying a new lighting fixture. It has a 10000k 50/50 bulb and a actinitc bulb. I want to upgrade to a MH/t5 fixture preferably with night LED's. I have read that lighting and protein skimmers are the two items you dont want to skimp on so I am asking for the advice of some experienced reef keepers on this one. I am hoping that if I get a 250w MH fixture that I will be able to keep most kinds of coral. I have been looking for used fixtures as decent ones seem to start around $500 and I would prefer not to spend that much right now. I have seen fixtures on ebay but anytime I see something on ebay for a significantly lower price it makes me skeptical. Also another consideration is I would prefer a fixture as opposed to a retrofit kit because I live in a rental house at school and cant drill the ceiling for a hanging light. If anyone could suggest a good 36" fixture that doesnt cost an arm and a leg that would be awesome. THanks!