help needed setting up reef tank

[whizzmista]

im after some info on setting up a reef tank, i have a 4ft tank! what size filter/heater/protein skimmer do i need and any makes you suggest! i will be using an external filter and not a sump! how much rock do i need and what lights! if i have missed anything out to set the tank up please let me know as i dont know about it cheers

 

[FishLipz]

How many gallons? Most recommendations will be based on volume rather than size.