am currently on day # 13/14 since starting fillup of new pool, Diamond Brite surface.
was given directions to keep PH at 7.0 for 30 days as ..."...it will help the surface to cure hard... brush daily..."
pool was acid washed before fillup and I ran old system (old pump, old filter) for about 10 days to collect most of the dust that brushing caused to flow into the lines.
PH is daily easily over 8.0, add 1 gallon muriatic acid and it's down to 6.8 - 7.0, is this quite normal for a new surface ?
new system is now running 24 hours/day, pump is set to 122 watts, 15 GPM and circulates water
have added just liquid chlorine and muriatic acid, nothing else but I do have on hand baking soda, borax and cyanuric acid and of course salt (..but salt will have to wait until January..)