Bought some salt at a garage mistake (potentially mistake #1) and it got super hard so I made a slurry with some RODI. My one coral was not looking good so I tested my water. 1ppm ammonia and 10ppm nitrate! I then tested my newly mixed water and it tested at 1ppm ammonia. What's going on here?? I'm going to test my RODI water (new cartridges) to double check. I don't have a tss meter (I know- for shame) and I havent switched past the API ammonia test kit (also for shame). Any thoughts? Does sitting water collect ammonia or does old salt?