Is there a list or thread somewhere in here that sums up what chemicals to stay away from adding at the same time or which to break into smaller doses over time to adjust numbers? In my pool store days they would say "Add this and then wait 24 hours before adding this other one.." or some such. I have read bits and pieces in different threads but haven't seem a summary of sorts. Is there anything in particular to stay away from? The little common sense I have tells me to add one at a time and test before adding something else as it may change the numbers...but not sure...