My best advise to you is keep it simple and try the Berlin method Bob mentioned in another thread... Do 10% water change every week and don't over stock with fish...Try the simpler things like polyp clusters and various coloured mushrooms on rock as they are quite undemanding and can make a stunning display...Things like a pair of clowns,neon goby, orchid dottyback and a few cleaner shrimp would go well in a smaller aquarium.