Great

Your cya counts as 50 for chlorination purposes
(always round up if between two lines)
So that means for normal maintenance you want to dose to high target which is 8ppm for you & replenish again before fc falls to minimum of 4ppm
View attachment 542043
That would take approximately 2 gallons of 10% liquid chlorine for your pool volume
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Pour it in slowly infront of a running return, avoiding from the pool wall, brush the area well.
The cc’s level is a little concerning so I suggest after getting your fc to target range that you do an
Overnight Chlorine Loss Test to rule out that you may have an organics problem.
You can take your nighttime oclt sample 30 minutes or so after your dose.
How does the pool look? Is it crystal clear or Any visible algae?