Hi,

I have a pebble tech 10K gallon pool. Located in southern california.

I took a water sample into a local pool supply and here are the results:

FAC: 3
TAC: 3
CYA: 100 they say that is high
TA: 120
PH: 7.4
TDS: 2250
PHO: 300

1) do I need to drain the pool and start over? This water is about 10 years old.
2) I us phosfree, used it on friday and now i see my pho level is high? should I be concerned?

I have green algea just added some poly.

thanks