CYA...........ugh

[wjaneala]

I've now put in two 4-lb. bottles of stabilizer...one a couple of weeks ago that I did through the skimmer....tested and my CYA was 0. The next I put in a knee-high and hung in front of a return. I squeezed it, too, helping it disperse. Just tested by CYA, a week later, and it's still 0. On my second knee-high now.

Any ideas as to why the CYA is not showing up? I'm using the TF-100.

FC: 0 (just added)
CC: 0
pH: 7.5
TA: 90

 

[cfherrman]

Check your FC and cc in 30 mins and report back

 

[mknauss]

8 lbs of CYA in your size pool gets you to just under 30 ppm CYA. The first 4 # was added into the skimmer. Did you back wash any time during the week after you added that? So not all of it is likely in the pool.

I would suggest that you have not added enough to test for. Is the sample cloudy at all when you fill the vial to the top?

 

[Jimrahbe]

Wendy,

Two 4- lb. bottles of stabilizer will increase the CYA by about 27 ppm in a 36K pool...

And if you added though the skimmer and then back washed you could have flushed the first dose..

It often takes a couple of days for the CYA to show up on our tests...

Thanks,

Jim R.

 

[wjaneala]

8 lbs of CYA in your size pool gets you to just under 30 ppm CYA. The first 4 # was added into the skimmer. Did you back wash any time during the week after you added that? So not all of it is likely in the pool.

I would suggest that you have not added enough to test for. Is the sample cloudy at all when you fill the vial to the top?

No, I didn't backwash that week after the first 4#. No, the sample is not cloudy at all. Clear as a bell.