I'm planning on starting a new 30g SPS tank with a 30g sump and would like input. I'm purchasing a used MH with no bulb. What type of bulb is recommended? I heard a 10k was best. What parameters should I be measuring and what are the ideal levels. What type of supplemental additives should I be using. Trying to keep expenses down so I can't purchase any expensive equipment (like a calc. thingy). Thanks for the help.