i've never had a saltwater tank before and really have no idea what i'm doing. i haven't gotton anything yet because i wanted to find out more first. what supplies do i need? could i get a 20 gallon and put clownfish in it? i really like gobys and inverts and live corals, could i put any of those together? how do i filter everything? and do i need a protien skimmer, because i'm not really sure what they do but everywhere i read they mention them, plus they are very expensive. any help would be greatly appriciated, thanks.


