bleach doses and algae

[karen936]

Thanks.

I had the water tested for the stabilizer and it went to 100 that's there max. I got the strips and it was over 250. Here in SW Florida we have had large down pours the last two days in the evening and with the chlorinator turned off all this time and using the bleach instead it has actually come down some. As of this morning it was down to around 100. I have a test kit but it does not test for cyanuric acid. Thanks for the help. I've been doing this pool for so long I can tell by the look of it when it's not right and it has a way to go yet the water looks like a sheet of glass not sparkling like
it should be.

Thanks again. Karen

[Watermom]

There is no way your CYA could have come down from 250 to 100 in days. That just isn't possible. Who knows what that CYA reading is. No test can distinguish past 100 but with the right kit, you can always try and do a dilution and at least get a ballpark figure.

Welcome to the Pool Forum, by the way!

[PoolDoc]

I had the water tested for the stabilizer and it went to 100 that's there max. I got the strips and it was over 250.

When a test is done, and the 'max' is reached, you usually need to interpret the result as being "X or higher", and not "X"! In your case, the first test did NOT mean your CYA=100; it mean your CYA = 100 . . . OR any higher value, including 500! Most likely, the 2nd result is also a 'max', indicating your CYA is 250 or MORE.

Once you get the K2006 (http://pool9.net/tk/), you can do an accurate dilution with distilled water, and test up to 500 ppm CYA.