Your pH is too high for your TA + CH; it could 'tip' into precipitating calcium carbonate easily. Do NOT add any more calcium; do NOT use cal hypo to chlorinate.

Make sure your sand filter is full -- it it WAS full, and you haven't been losing small amounts of sand when you backwash, it probably still is full.

Make sure your chlorine levels are staying consistently at 3 ppm or higher. Low chlorine + shocking after several days = hazy water that lasts for days, depending on your filter. For crystal clear water, you need appropriate chlorine levels ALL the time.