92 Degree pool, should I keep the Chlorine high?

guisep

Member
Jul 14, 2007
6
My local pool company suggest 5ppm FAC... current numbers
FAC 5ppm
TAC 5
pH 7.6
TA 110
CYA 80

Things are good now but I want to keep them that way..

Any suggestions for anything else?
 

JohnT

Admin
Mod Squad
TFP Expert
Apr 4, 2007
9,629
SW Indiana
With a CYA of 80, you should be keeping a higher FC than that. Chemgeek's chart in the "The Stickies" recommends 5.8ppm as the minimum FC and around 9 as the ideal level for your CYA level.
 

The Mermaid Queen

TFP Expert
LifeTime Supporter
Mar 28, 2007
2,522
Northern KY
Your numbers look good, though as JohnT said, your FC is on the low side.

There are some helpful links in my signature that will help you take charge of your pool.

Welcome to TFP!
 

JohnT

Admin
Mod Squad
TFP Expert
Apr 4, 2007
9,629
SW Indiana
guisep said:
Thanks for the info.. I'm running a salt system so I guess I'll pump up the output and retest
Well, with a salt chlorinator, the chart doesn't apply. You can even go a little lower than 5ppm and be fine.
 

chem geek

TFP Expert
LifeTime Supporter
Mar 28, 2007
12,083
San Rafael, CA USA
As John says, with an SWG you can go lower than the minimum in the chart. Around 3 ppm FC for 60-80 ppm CYA seems to be about the low limit. 2 ppm FC or lower produced algae in several SWG pools. A very few pools even had algae at 3 ppm and needed to use the minimum FC in the chart, but they are the exception. I think that the superchlorination in the SWG cell over multiple turnovers plus the consistent dosing prevent the free-floating green algae from growing.

Richard