salt water pump,skimmer and filtration size please help

[crayfish]

can someone please advise me what to buy next ,i have got a tank 1800x600x600 and a sump tank for salt water ,what size pump will i need ect cheers

[MonkeyPox]

You'll need to provide a little more information then that (blush)

Is the tank predrilled? What do you plan on placing in there? Any LR?