A year goes by and I forget how to balance my water when first openning. I put 7 lbs of cya in the past few days. I was reading 0 when I opened pool. I seem to be holding some chlorine overnite. I now have 2ppm of fc and .5 of cc.
How do I shock when I have a cya of 0. I went to the chart and there is no 0 for a cya reading so I can't come up with a good multiplier for shocking.
The water is cloudy and a light green. Cannot see the bottom, maybe a little in the low end. I been brushing and backwash when needed. Just got done vacuum and now I am at a loss of what to do next.
My ph is 7.5 and ta is 60. Any advice?