All my fish died after I tried so hard to get the ammonia down but it only increased. I tore it down so that I could start over and the ammonia is crazy high. I did what a few other people had told me before to check to see if its in the water that I put into the tank. Suprisingly, it doesn't have any ammonia in it, its 0. I took everything out of the tank when I took it down and washed it with water as best as I could. I even washed the gravel several times to be sure. Could there be ammonia still on the gravel or some of the decorations I have in the tank? Should I get new gravel/decor? I had received the gravel from a friend which she had used in her established tank. I use ammo-lock as the conditioner that I put in my water before adding it to the tank. Also, I put a new cartridge in the filter before puting water in the tank. What should I do? I want to be able to have a successful tank but it seems like this ammonia problem is never going to cease. Please help!