I let it run for a good 48 hours atleast and now I got a 24PPM. I am happy with this. I think my issue was I was using a lot of water (1/2 gal) and 2 small silver coins (about the size of a US dime). This is why it took so long. You can see the difference in color of the water. It is a little gray. I will be using this to produce some males in about a month. I will let you know how I make out as well as where the video is I am making.