I did my data all over again on Friday and started my EDTA at 40, 80, 120, 160, 200. Ran the simulation 10 times with different EDTA amounts, plotted and graphed in excel. This actually worked 100 times better than the last data set I had in excel. Now I am ready to maybe start thinking about adding in Ca+ deposits in as a bonus to my simulation and add in my simulation and graphs.