You should be adjusting your dosing times to match a full strength solution instead of adjusting your solution to your dosing time. When your adding a fresh mixed full strength solution to your diluted solution that's left in your dosing container its raising that diluted mix and throws off the ratio.
well that's what im trying to get at i guess ?? im mixing each batch EXACTLY the same way EVERY TIME so theoretically they should be the same ?? i don't know how much swing im going to get until i measure the Alk the next day and see where its at ? i shouldn't have to keep adjusting dosing amounts with each new batch ?? i would think it should be pretty close so minor adjustments ok but to go from 8.2 up to over 13 doesn't make sense to me ?