I'll save you some time, the link is below.
As for the infloor heads, Just run long enough to clean up the floors. I think most here run around at least 2 hours. But that fits perfectly to the recommended run time. If two hours is not enough for the infloors or skimmers to do their job, increase run time until it is.
However, I see you have an IC40. You will need to run long enough for that to reach your FC target.