hey guys, ive been a sucessful freshwater fish keeper for years now, currently have a beautiful red dragon flowerhorn in a 90 gallon tank, but ive always wanted to try saltwater. someone is selling his 180 gallon setup with LIVE ROCK, UV STERLIZER,BERLIN PROTIEN SKIMMER, ELECTRONIC SALINITY METER and AND LIGHTING. LIGHT IS HALIDE AND ATINIC COMBO WITH BLUE LED NIGHT LIGHTS OH YEAH A WET DRYFILTER ALSO. It currenlty only has a unicorn tang in it and the price is great but i dont have a clue about salt water fish, setup or anything else. will i be ok or should i start smaller? what else will i need for the tank? what type of maintaince am i gonna be looking at, i really want a salt water tank but im scared i might screw everything up. everyone says it cost so much money. as per fish and coral i was gonna start slowy just adding each month. any tips on what else i will need and also some advice would be great.