I am getting ready to start adding some begginer corals (mushrooms, xenia, candy can, yellow polyps). Other than kalk, calcuim, and fish food, should I be feeding/dosing and additional "stuff". I am a little confused on the subject since I get varied info. on their requirements. I figure the "its not an exact science" line will apply to this subject as it does to most reef keeping subjects, but I'm hoping to at least get a clearer understanding of what I should be doing. If I do start feeding the corals, should I turn my skimmer off during feeding times? Wouldn't the skimmer effectively skim the "food" out?