Confused FC 1.0 - 3.0 ppm or 5.0 -9.0

[Stevemaddison1]

Hi ,
my test kit it states ideal FC 1.0 - 3.0 however the pool calculator in the App is stating 5.0 -9.0.Which is it? My CYA is 50.

All help much appreciated.

steve

 

[JJ_Tex]

What kind of kit do you have?

Here we look at the FC/CYA ratio (see link in my signature) to determine your FC based on your CYA. That is a newer way of pool management vs what you might see printed on some test kits, pool stores, etc.

 

[Stevemaddison1]

That makes perfect sense, thanks very much for the quick response.
Take care.
Steve

 

[Dirk]

To answer your question... Since it's not in your signature, we're assuming you do not use a salt water generator (SWG). Also, you didn't actually say which app you're using. If your CYA is 50, then you'll want to keep your FC between 6–8. You can safely ignore FC recommendations from pool stores, pool guys and even pool test kits. This is the source you can rely on:

The Free Chlorine and Cyanuric Acid Relationship

Managing your cyanuric acid and Free Chlorine levels is key to stabilizing your pool. Learn how these two items affect each other.

www.troublefreepool.com