New 14 gallon biocube help :)

Hi everyone. I recently(one week ago) purchased a 14 gallon biocube. This is my first saltwater aquarium and I realize the commitment and work it takes. The tank has ten lbs of live rock and live sand. Upon purchasing the tank I also purchased a cleaner shrimp, two clowns, one anemone and some snails. As of right now the only animal still going strong is the cleaner shrimp. Being so brand new to salt water I had no idea what was going wrong. Any one have an ideas or suggestions for getting my tank healthy? It would be much appreciated right now since I'm feeling pretty helpless!