Cost wise the tank,cabinet,canopy,filter,lights,sump and pump were bought together used for $200.I KNOW,What a deal. But if I were to replace it all now with new it would be well over $3,000. As for the fish I have in the tank,There are By many peoples standards TOOOO MANY. But they all get along,and do not show signs of stress or overcrouding.The only real problem I have had is the high nitrates.But I have launched a major war on them.The actual count is 6tangs,1adult angel,1juvi angel,2dwarf angels,1butterfly,1psudochromis,1green chromis,1tellowtail,1barr gobie,2clowns,1starfish,2anemones,and assorted small inverts.The next step is to remove the bio balls after I add about 50 more lbs of live rock.I may even add another tank in the cabinet to hold it so it wont take up room in the main tank.