I would not worry about the phosphate at all. It is a non-issue and you don't have any problems now either, BUT the CC of 2 ppm and the pH of 8 is troublesome.
First, shock the pool with bleach or liquid chlorine to about 20 ppm a to get rid of the CC (since you did not say how big your pools is I can't tell you how much to put in but a good rule of thumb is that one gallon of bleach or liquid chlorine wil raise the FC in 10,000 gallons by approx. the strength of the chlorine (i.e. a gallon of 6% bleach will raise it 6 ppm and a gallong of 12.5% pool chlorine will raise it about 12.5 ppm.) It might take more than one shocking, depending on the source of the CC.
I would also add some acid to get the pH below 7.8.
Once you get the CC to 0 ppm you can work on the pH stabilty.
Bringing your CYA up a bit to around 80 ppm and setting the SWCG to maintain a 4-5 ppm FC is the first thing I would recommend
Then getting your TA down to about 70 ppm to minimize the pH rise from outgassing of CO2. (If you have a plaster pool you will need to bring the calcium hardness up a bit to keep the water balanced...around 350 to 450 ppm.