Tommorrow morning I am picking up a 180 gallon fish tank from a guy at work with the measurements coming in at 72x24x24 with the stand. I picked it up for 500 bucks. It is a glass tank. I just got into this hobby and have spent numerous hours and hours on this forum and the net starting up fish tanks. I started a 45 gallon that I cycled with buo-spira and have it up and running for 2 months now with everything good to go. I want this 180 to be a saltwater tank. All I am starting with is the 180 gallon and the stand and am assuming the hood and light. On my freshwater tank I use a topfin 60 that pumps out 300 gallons per hour. I am clueless on what to use for the 180. I was thinking 2 emperor 400's or is that not enough. I dont know anything about canisters but heard good stuff about eheim. I will ask other questions later about the live rock and amount of salt and all that other stuff at a later date unless ya feel like adding that in but what I really need to know about is the filteration I need. Money really isnt tight so feel free to let me know what ya think I should get. I want good filteration. Would 2 bio wheels be better than a canister, or a biowheel and a canister. Please give me some advice. Also I was thinking 2 300 watt heaters. Is that what I'll need? Thank you for your time and input and what ya think my setup is worth, just say an average 180 used tank and stand. Havent seen the stand yet.