so i have a 125 gallon tank that i have had for a little over a year, and i got the idea that i would like to have it super populated with schooling fish. i have 3 tangs in there now, and a few green chromis, but I would like to have TONS of damsels, etc. right now i have about 150 lbs of live rock and a 55 gallon sump. i have a reef octopus extreme 200 skimmer. so my quesitons are: How many fish could i reasonably put in a 125? Do i need all of that live rock, or could i get rid of some of it to have more room for fish? What about inverts for a Clean up crew? Are they necessary? What about lighting? I have MH and T5 lighting now, but is it necessary? would someone with some fish only experience help me out?