CYA too high?

cue · Apr 22, 2015

I did a full test. Water temp 66 degrees

FC-5 I will be adding 102oz or bleach to raise it
PH-7.5
TA-120
CYA-65

I have a CC of 1. Should I worry about that?

jblizzle · Apr 22, 2015

Certainly not good to have the CC that high. I would bump the Fc up toward shock level (which should help take care of the CC) and do the Overnight Chlorine Loss Test to make sure there is not a problem.

Do you see any algae?

cue · Apr 23, 2015

No algae. Pretty much all of the water has been replaced in the last 3 days. Would that cause this?

Patrick_B · Apr 23, 2015

Since you say re-fill and no Algae or other Did you fill it with City water?

cue · Apr 23, 2015

duraleigh · Apr 23, 2015

Where Patrick_B is going is that city water now often contains a type of chlorine that will test as CC's. So that means not to worry about that 1 CC reading as it is likely from city water and will come down on it's own.......remember, a test result of .5 CC is treated the same as if it were zero so you are not far off.

Painful, but you were wise to reduce your CYA. Your pool water management will be far easier and less expensive the rest of the summer.

Patrick_B · Apr 23, 2015

Sorry, I shouldve said that but I was speculating on city water. They actually use ammonia in conjunction with Chlorine to create Chloramines for a different type of disinfectant. With properly managed FC residuals, you'll come down to 0.5 CC shortly. No worries.