OK after many debates with the partner we have decided to go marine. 
 
Now I will admit I know barely any-thing, but I am going to start on a step by step learning curve, and am not going to rush and do this over night. 
 
Now I have a 320 L tank on a rimu stand with hood. 
No holes drilled out. 
Filtered with a Fluval 204/205 will double check that. Jebo Heater. Nothing fancy. 
 
Now I want to start by asking what basic equipment do I need? Brands, sizes.. 
i.e skimmer, lights, filters . . . 
 
Followed by items needed? (externally) 
i.e refractormeters 
 
My goal by next year (will need to fund the project as I go, yes I am prepared to spend money) is to have a marine tank, fulled with live corals with a few fish, clown, tangs few others in mind. 
 
Hope some-one can point me in the right direction!