Well, i have a 55 Gallon (48Lx12Wx20H) Marineland all-in-one. Penguin 350 Bio-Wheel, LED lighted Hood. Gravel, natural slate caves and terraces, Malaysian Driftwood, Airo Volcano Bubbler. Here is my dilemma for now, I set up my tank got it all running and cycled and added my fish…yay! Bad news, my roommate and I have had some issues, so I have re-homed all my fish and have to break down and move my aquarium. So, I am going to start all over again, but the good thing is, I’ve decided on the look and décor I want. I want to use the black sand because I would like to get into live plants and it really makes the greens pop. So when I move into the new place, I am very open to all suggestions as far as getting new equipment…should add extra filtration? I really want to do this right, and do it once. My problem is I like to too many varieties, puffers, eels, crayfish, sooo its tough. But I guess above all I want something that is active and moves around and is relaxing to watch. So I am very open to all suggestions.