Originally Posted by jsgreer1
how does a skimmer work do i leave it in the tank or do i just use it and put it away
Depends. If you don't have a sump you would need one that hangs on the back. Either way, you always leave them installed.
Sounds like your lfs has given you some bad advice. Go out and buy yourself Fenner's "A Conscientious Marine Aquarist". That book will easily explain what you need to know to start out. What types of filtration, lighting, live rock, etc. Best investment you will ever make