TFP FAC HIGH?

feetr2c

Well-known member
May 13, 2012
72
#1
Just curious... I see on Ken's Simple Pool app for Android that TFP recommends a FAC of 5 - 10? That just sounds high. I always thought that a 2 - 4 range was more desirable. Can someone explain?

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kenmar

LifeTime Supporter
Apr 13, 2009
288
Schnecksville, PA
#3
The fac range is based upon your recorded CYA level and the levels goal chosen on the "defaults" screen.
What have you configured for your pool, and what did you measure for your last test?

-Ken-
 

feetr2c

Well-known member
May 13, 2012
72
#4
kenmar said:
The fac range is based upon your recorded CYA level and the levels goal chosen on the "defaults" screen.
What have you configured for your pool, and what did you measure for your last test?

-Ken-
I didn't set customized values, but rather had it use TFP recommendations. My last test this eve had FAC @ 4.5 and CYA @ 70
 

jblizzle

Mod Squad
TFP Expert
LifeTime Supporter
May 19, 2010
41,197
Tucson, AZ
#5
feetr2c said:
My last test this eve had FAC @ 4.5 and CYA @ 70
Well there you go: CYA @ 70ppm requires 5-8ppm FC according to the chart I linked to and 5-10ppm according to poolcalculator.com which I believe SimplePool is loosely based on.