So I woke up today and my yellow watchman died, along with one of my snails. I have a 2.5 gallon mb that had a ywg, pistol shrimp, 2 snails, 2 hermits, some xenia, and a mushroom coral. The pistol, one snail, and both hermits are doing fine. The xenia looks ###ed (I think it's a goner) and the mushroom coral looks a little agitated (but much better than the xenia). I can't figure it out because everything was doing fine (even the xenia grew into two new colonies on the glass and filter and the mushroom sprouted 3 new buds). When I found the fish he looked like he suffocated because his gills were wide open and his mouth was open. The tank levels were fine as far as I know and the tank has been set up and doing fine since Thanksgiving 2005. The only thing I can think of is I might have gotten some windex in the tank while I was cleaning the glass. Assuming it was the windex, is it safe to use the tank again (I'm going to start it up again) if I remove everything and clean it out with a sponge and water (no soap)? Or should I get a new tank and live rock? I have pictures of the xenia and mushroom if someone can host them. Any advice on starting again? My main concern is residual chemicals, since I always cleaned the glass with windex. Thanks.