You only need to add 5 drops of r0003. If the water stays colorless, then the cc is 0 and you are done.
Shock level is the TARGET, there is no need to raise the FC level above it.Be sure to keep it just above shock all day long until you pass it! Don't let anything grow. Don't lose ground. Be sure to clean behind lights, inside ladders, inside ladder bottom plates/weight, and skimmer basket frame, and anywhere algae might hide!!! Get it all! Pass that test