a friend gave me a 12 or 14 gallon nano and stand last week and I had planned to use it as a nusery for sea horses but after seeing how sweet your nano is it's temping to set it up as a mini reef. how hard is it to keep stable? also I am not sure if I am missing a few things like how do these little nano's skim? I think I will also need a pump? here's what it looks like. any idea's? I'm really not sure how these work