Daily FC liss due to sun in central TX


Well-known member
Jun 10, 2020
Austin, TX
My CYA is 50.
Pool is 34000 gal.
Pool is in full sustaining about 10am in summer.

My questions:
1. What should I expect daily FC loss to be for my pool given cya 50

2. Should I increase cya to 60? Will it help or hurt, and how do I determine that?

Thank you for help.


Gold Supporter
TFP Guide
Jul 21, 2013
Northern NJ
Pool Size
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
UV Unit: Delta UV D-80; Chlorinator: Nature2 Fusion; Spa

Is your UV unit running? If so it will add to the sun consuming your FC.

You running the SWG cell int he Nature2 Fusion? If so your CYA should be more like 70.
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