TF-100 Help With CYA Test

[wakerider017]

I fell like there is some 'interpretation' need with this test. Do you guys think I am at 40 or 50? Thanks!

 

[jmikeb]

i would say it’s between 40 and 50.. so use 50 for your number

 

[Rocket J Squirrel]

Are you asking for votes? I vote for 40 based on those photos.

 

[Pperc]

i would say it’s between 40 and 50.. so use 50 for your number

is the rule to round down or up?

 

[jmikeb]

is the rule to round down or up?

up

 

[Pperc]

up

Which is down on the tube ?

 

[wakerider017]

Thanks guys, so I guess I'll go on the safe side and say I have 50. I have a SWCG, so time to add some CYA.

 

[Stump]

CYA - Cyanuric Acid Test

Cyanuric acid (CYA) is the chemical name for the product commonly called “pool water stabilizer” … Read more…

www.troublefreepool.com

The safest way to ensure you have enough Free Chlorine for your CYA level is to round up your CYA result. If the endpoint of the CYA test is between 50ppm and 60ppm record that result as 60ppm and use that to determine your required Free Chlorine level.