I'm in the process of cycling my third tank, and can't find ammonia. I didn't have this problem with the first two because I cycled with fish (I know the drawbacks, I used 2-3 serpae tetras, didn't lose one...), but this is a 29g brackish tank, so I want to do it fishless because I don't think there are hardy brackish fish appropriate for cycling a tank. My LFS only has Cycle, not ammonia. I tried Petland, Pet Smart, and Wal Mart, and none of them had it. Can I get just pure ammonia from somewhere else? Thanks.