Hi. So, we set up a 40 gallon fowlr tank. Let it stew with the rock and live sand and a couple of snails for a few weeks. Had an algae bloom, and the little white copepods, so thought all was well. Put a few fish in. They all got white spots and died a few days in. Waited another week or 10 days. Put a few fish in. White spots and death. I assume ich, so I leave the tank empty and running for six weeks, which I read would get rid of all the ich. Put a couple of fish in and they seemed great. Week goes by, so I put a couple more in. Everybody was all good for about three weeks, and now they are all dying off in the order I introduced them. I've had a freshwater tank for 7-8 years, so I'm not a complete novice, but this is our first attempt at salt. Throughout all this, test strips have been perfect, including amonia, salinity has been perfect. Using ro water for top off. Do I just have to get rid of everything and start over? Do I have a tank of death? Any input or suggestions would be appreciated. I'm almost ready to give up and make it fresh water, but I really love the saltwater fish...