First, WELCOME!!!!
With a nano take you time!! Dont rush into anything. If you arent sure you want that fish or coral dont get it. You dont have enough room in the tank to have something in there you dont want! Stay away from anemones.
With a 12 gallon tank I think you could have 1-2 fish in it. I have a 6 and I dont have any plans on putting a single fish in it, just load it up with coral! The wet/dry you have might be a problem. I have no biological filter in my tank, the only thing I have in there for biological filteration is live rock, and it is doing an excelent job at it!
With a nano take you time!! Dont rush into anything. If you arent sure you want that fish or coral dont get it. You dont have enough room in the tank to have something in there you dont want! Stay away from anemones.
With a 12 gallon tank I think you could have 1-2 fish in it. I have a 6 and I dont have any plans on putting a single fish in it, just load it up with coral! The wet/dry you have might be a problem. I have no biological filter in my tank, the only thing I have in there for biological filteration is live rock, and it is doing an excelent job at it!