Ben, Watermom,

(pool info is in my signature)
Thank you for your insight and prompt response. I am happy to report that by following your instructions my pool was crystal clear within 48 hrs. You helped turn a very aggravating experience into a pleasurable one. My water is the clearest its ever been.

I think the pH increase was a key factor (up from 7.2 to 7.6). Once pH was near 7.6 on Saturday afternoon I saw immediate progressive changes. fyi - I used soda ash instead of the usual Borax which I normally use.

I am including data for the past 72 hrs so that you can see any trends. At this time my concern is FC& TC are not holding over night.

Additionally, I would like to stop 24/7 filtration as I normally run filter only 6 hrs per day during the season. (My pool gets very little use.)

Qs:
1. Water is crystal clear. Can I resume “normal” maintenance at this time?
2. What are people doing to maintain chlorine and stabilizer or are they adding CYA and bleach throughout the week? I normally use skimmer tabs.
3. FC & TC not holding overnight. Is this normal?

Please review data and comment.

Friday
• 4:00pm TA=85 CYA=30 pH=7.2
• 8 pm added 4 gal 12% shock
• Unfortunately I cannot find Cl data for Friday evenning

Saturday
• 8:00am pH=7.2 FC=0.5 TC=1.0
• 1-7 pm Added 9 lb Soda Ash
• 8:30 pm pH=7.6 FC=0 TC=1.5
• 9:00 pm added 4 gal 12% shock
• 10:00 pm pH=7.6 FC=10 TC=10 (determined by dilution of FAS)

Sunday
• 8:00 am pH=7.6 FC=0.5 TC=1.5
• 9:00am added 4 gal 12% shock
• 10:00am FC=10 TC=10
• 4:30pm pH=7.5 FC=1.5 TC=1.5, added 1 lb soda ash
• Note by 9:00pm pool was clear
• 9:00pm pH=7.6 FC=0.5 TC=1, Added 1 gal 12% shock
• 10:00pm pH=7.6 FC=6 TC=6

Monday
• 9:00am pH= 7.6 FC=1 TC=2 TA = 110
• 9:00pm CYA=35 pH=7.6 FC=0.5 TC=0.5 added 1 gal 12% shock
• 10:00pm FC=6 TC=6