I have a 72 bow that is just sitting in my living room havent had anything in it for like a really long time. but it is running cause i am too lazy to break it down. But this tank has been set up for like 5 months, and i am amazed how a reef will keep it self clean. My old tank would get soooooooooooo much algae it was not funny, that is why i dont have anything in it. then someone gave me this 180 setup and i decided to do the reef. Those lovely cleanup crew. they do a wonderful job... I have to add like another 125-150 lbs of rock and build my fuge. Im gonna use a 90 gal for that. And then hopefully once that is done i will build my frag tank. If anyone has any good tips let me know.....