Well, I have two fish in my 20 gallon tank. I took a slate rock from around our fountain, scrubbed it with hot water, boiled it twice in distilled water, and added it into my tank. When I woke up this morning, my tank was extremely cloudy. What do I do? I tried looking at wally world and the nearby pet stores for something to help, but there wasn't anything. I did a partial water change this morning. What else can I do?