advice...pods, lots and lots of pods. You don't really need a huge tank to keep a mandarin, you need a huge amount of copepods. I would suggest getting as much live rock as you can and then ordering a couple of bags of pods from SWF, they sell them for like $12 for a bag of @200. Then play the waiting game to make sure that they are reproducing (look for them when theh lights first come on in the morning, when you start to see them scurrying away from all directions, you are pretty close to ready). A good idea to help in keeping them is also to have a refugium (I don't have one yet, so I am not too sure as to how to set one up or what other benefits they have)