I wanted to start a new thread for the next stage of getting my pool into shape. In the first step I successfully shocked my pool which took a bit over a week to go from dark green to clear blue. The thread for interest is here help-pool-balance-issues-t54770.html
This morning I completed a full set of tests with the following results:
The things I see need attending to are:
1. High TA needs dropping (acid and aeration)
2. Low CYA (salt water pool)
3. Black spot (currently brushing regularly with SS brush, longer term issue)
What is your advice on where to get started?