Skimmer: mazzei, h&s, beckett, deltec.
sand grade/thickness: grade 1, about 150kg, 4 inch thick
pump: many choices>> tunze, eheim, ocean runner, aqua bee, rio32. . and the list goes on.
live rock: depends how u wan to scape, min 100++++++kg.
type of lighting: 2x250watt mh with 2 atinic sld be the min.
salt: salt mix alone can cost u almost $200 already, maybe can use NSW n salt mix to save $$
you still need FR, refugim lightings, lots of addictives. . etc etc