Day 9: Pool is crystal clear. Total bleach so far = 63.5 gals 6%. Pump pressure steady. FC dropped 1.5 ppm and CC unchanged overnight. FC drops to 0 by noon each day, so I added the CYA to reduce daytime usage. Slight movement in CYA yesterday. Plan to check it tomorrow. I'll change the sand in 8-10 days. It looks like the end is in sight.

Here are the overnight readings:

Thur 7:30pm
7 ppm FC
0.5 ppm CC
7.2 pH

Thur 6:30am
5.5 ppm FC
0.5 ppm CC
7.2 pH