I have a 55 gallon tank, never had a drop of water in it, and I am planning on starting my very first saltwater tank. I had a few questions though. My biggest concern is equipment. Will any power filter work in saltwater? I know I'll need to change my lighting. I'm planning on using live sand for substrate, but I'm not sure if I'm going to have any live corals or live rocks for a while untill I get the hang of keeping the salinity at a constant level. So what would be a good starter fish for me? A fish that could live with normal rocks for a while, untill i get a hang of this. Is the cycling period the same as freshwater? Ive been keeping tanks for about 5 years now, with no big accidients, only lost a few fish to ich, thats about it. Any help would be appreciated