Perhaps this is somewhere in a chart at TFP...
I had typically tried to keep my FC towards the high end of the FC levels on the CYA/FC chart in Pool School. I noticed the pool calculator it goes a little higher for a CYA of 50 (4-6 vs 4-8).
I started to think, I know anywhere above 4FC as far as algae I should be fine. My question is centered more around extra losses of FC at a level of 8FC opposed to a level of 6FC. When I shock its not uncommon to drop several points of FC loss in a few hours. Thus there appears to be a steep curve of FC loss when you go above ideal FC/CYA levels.
Are there any curves or any data that could help support how much more FC usage (thus cost) one may go through trying to maintain higher FC levels on a regular basis (than necessary).