I set up a 30G tank in october, I used the following: a hang on filter, crushed coral, 8 Lbs LR on top of 10Lb base rock, a SG meter, test kit, a 50/50 light, salt, 2 small powerheads. I dont have a skimmer (yet). Now I have 3 fish, an urchin,a starfish, some hermits, a shrimp, and some snails (not to mention some cool creatures in and on the live rock, I see more everyday). I think probably my goal is to have 4 (maybe 5) fish in my tank when all is done. Its actually not too tough to maintain, I do 2 G of water change every 2 weeks and things stay really clean and everything looks healthy. Do things very slowly and you will be successful, I have been so far.